.editorconfig

@@ -24,3 +24,12 @@ insert_final_newline = true
 indent_style = space
 indent_size = 3
 max_line_length = 120
+
+# Makefile
+[{Makefile,GNUmakefile}]
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = tab
+indent_size = 4
+max_line_length = 120

manual/addons/3d_view/3d_navigation.rst

@@ -49,7 +49,7 @@ Align View from
 Lock View to Object
    Select an object to align view, from the list.
 
-View to Select
+View to Selected
    Align view on selected object.
 
 Cursor

manual/addons/animation/bone_selection_sets.rst

@@ -32,7 +32,7 @@ A bone can belong to more than one selection set.
 
 .. seealso::
 
-   :doc:`/animation/armatures/properties/bone_groups` for a way to visually distinguish groups of bones.
+   :doc:`/animation/armatures/properties/bone_collections` for a way to organise groups of bones.
 
 
 .. reference::

manual/addons/import_export/images_as_planes.rst

@@ -52,7 +52,7 @@ Compositing Nodes
 -----------------
 
 Setup Corner Pin
-   Add a compositing setup of the Image Texture, Scale, and :doc:`Corner Pin </compositing/types/distort/corner_pin>`
+   Add a compositing setup of the Image Texture, Scale, and :doc:`Corner Pin </compositing/types/transform/corner_pin>`
    nodes to inject a warped view of the image into the compositor output. The add-on adds drivers to
    the corner values of the Corner Pin node so that transforms of the plane and camera drive them.
    Make sure to have an active camera in the scene before the import.
@@ -89,7 +89,7 @@ Material Type
 
 .. note::
 
-   *Blend Mode* and *Shadow Mode* options are specific to the Eevee renderer.
+   *Blend Mode* and *Shadow Mode* options are specific to the EEVEE renderer.
    For a detailed explanation of each option, see :doc:`Material Settings </render/eevee/materials/settings>`.
 
 Blend Mode

manual/addons/import_export/mesh_atomic.rst

@@ -286,13 +286,13 @@ black. Note that the last value of a color tuple is the alpha value of the
 color. Furthermore, several other properties such as ``Metallic``,
 ``Roughness`` and ``Transmission`` can be changed. These are the properties
 in the :doc:`Principled BSDF shader </render/shader_nodes/shader/principled>`.
-There are also some properties for :doc:`Eevee </render/eevee/index>`, which
+There are also some properties for :doc:`EEVEE </render/eevee/index>`, which
 can be used to determine the object's transparency etc.
 
 
 Note that in the header of the custom data file,
 all possible values of the string options ``P BSDF Subsurface method``,
-``P BSDF Distribution``, ``Eevee Blend Method`` and ``Eevee Shadow Method``
+``P BSDF Distribution``, ``EEVEE Blend Method`` and ``EEVEE Shadow Method``
 are listed.
 
 .. figure:: /images/addons_import-export_mesh-atomic_utilities-panel.png

manual/addons/import_export/node_shaders_info.rst

@@ -52,6 +52,8 @@ Principled BSDF
    - Metallic
    - IOR
    - Transmission
+   - Emission
+   - Emission Strength
    - Alpha
 
 Normal Map

manual/addons/import_export/scene_3ds.rst

@@ -7,8 +7,8 @@ Autodesk 3DS
 
    :Category: Import-Export
    :Menu: :menuselection:`File --> Import/Export --> 3D Studio (.3ds)`
-   :Version: 2.4.6
-   :Blender: 3.6
+   :Version: 2.4.8
+   :Blender: 4.0
    :Authors: Bob Holcomb, Campbell Barton, Sebastian Schrand
    :Maintainer: Sebastian Sille (NRGSille)
    :Support Level: Community
@@ -163,7 +163,7 @@ they must be color inverted afterwards to match with Blender definition.
 The material mappings are defined as following:
 
 - 3ds Diffuse Map <-> blender Base Color Texture
-- 3ds Specular Map <-> blender Specular Texture
+- 3ds Specular Map <-> blender Specular Tint Texture
 - 3ds Shininess Map <-> blender Roughness Texture
 - 3ds Reflection Map <-> blender Metallic Texture
 - 3ds Opacity Map <-> blender Alpha Texture

manual/addons/import_export/scene_gltf2.rst

@@ -42,6 +42,16 @@ compared to Blender, as such vertices are separated for export.
 Likewise, curves and other non-mesh data are not preserved,
 and must be converted to meshes prior to export.
 
+GPU Instances
+-------------
+
+When the option is enable in Exporter, instances are exported using the ``EXT_mesh_gpu_instancing`` extension.
+There are some limitations, at export:
+- Instances must be meshes, and don't have any children themselves
+- Instances must all be children of the same object.
+- This extension doesn't manage material variation. That means that the generated file may include all instances with same materials.
+- Instances detected are objects sharing the same mesh data.
+At import, instances are created by creating objects sharing the same mesh data.
 
 Materials
 =========
@@ -257,9 +267,9 @@ All Image Texture nodes used for clearcoat shading should have their *Color Spac
 Sheen
 ^^^^^
 
-When the *Velvet BSDF* node is used in addition to Principled BSDF node, the ``KHR_materials_sheen`` glTF
-extension will be included in the export. The Sheen Color will be exported from Color socket of Velvet node.
-Sheen Roughness will be exported from Sigma socket.
+When the *Sheen BSDF* node is used in addition to Principled BSDF node, the ``KHR_materials_sheen`` glTF
+extension will be included in the export. The Sheen Color will be exported from Color socket of Sheen node.
+Sheen Roughness will be exported from Roughness socket.
 
 If a Sheen Roughness Texture is used, glTF requires the values be written to the alpha (``A``) channel.
 
@@ -267,8 +277,8 @@ If a Sheen Roughness Texture is used, glTF requires the values be written to the
 
 .. tip::
 
-   Velvet BSDF node is only available on Cycles render engine.
-   You may have to temporary switch to Cycles to add this node, and get back to Eevee.
+   Sheen BSDF node is only available on Cycles render engine.
+   You may have to temporary switch to Cycles to add this node, and get back to EEVEE.
 
 .. note::
 
@@ -276,7 +286,7 @@ If a Sheen Roughness Texture is used, glTF requires the values be written to the
    the resulting shader is not fully energy conservative.
    You may find some difference between Blender render, and glTF render.
    Sheen models are not fully compatible between Blender and glTF.
-   This trick about adding Velvet Shader is the most accurate
+   This trick about adding Sheen Shader is the most accurate
    approximation (better that using Sheen Principled sockets).
 
 
@@ -442,8 +452,8 @@ Double-Sided / Backface Culling
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 For materials where only the front faces will be visible, turn on *Backface Culling* in
-the *Settings* panel of an Eevee material. When using other engines (Cycles, Workbench)
-you can temporarily switch to Eevee to configure this setting, then switch back.
+the *Settings* panel of an EEVEE material. When using other engines (Cycles, Workbench)
+you can temporarily switch to EEVEE to configure this setting, then switch back.
 
 Leave this box unchecked for double-sided materials.
 
@@ -458,7 +468,7 @@ Blend Modes
 The Base Color input can optionally supply alpha values.
 How these values are treated by glTF depends on the selected blend mode.
 
-With the Eevee render engine selected, each material has a Blend Mode on
+With the EEVEE render engine selected, each material has a Blend Mode on
 the material settings panel. Use this setting to define how alpha values from
 the Base Color channel are treated in glTF. Three settings are supported by glTF:
 
@@ -472,7 +482,7 @@ Alpha Clip
 
 .. figure:: /images/addons_import-export_scene-gltf2_material-alpha-blend.png
 
-   With the Eevee engine selected, a material's blend modes are configurable.
+   With the EEVEE engine selected, a material's blend modes are configurable.
 
 .. note::
 
@@ -569,6 +579,7 @@ are supported directly by this add-on:
 - ``KHR_lights_punctual``
 - ``KHR_texture_transform``
 - ``KHR_mesh_quantization``
+- ``EXT_mesh_gpu_instancing``
 
 
 .. rubric:: Export
@@ -585,6 +596,7 @@ are supported directly by this add-on:
 - ``KHR_materials_ior``
 - ``KHR_materials_variants``
 - ``KHR_texture_transform``
+- ``EXT_mesh_gpu_instancing``
 
 
 Third-party glTF Extensions
@@ -795,11 +807,16 @@ Bone Direction
    Changes the heuristic the importer uses to decide where to place bone tips.
    Note that the Fortune setting may cause inaccuracies in models that use non-uniform scaling.
    Otherwise this is purely aesthetic.
+   The default value will not change axis, and is best for re-exporting from Blender.
+   This default option will change display mode (adding shape and changing relationship line) to have a better view,
+   even if original bones axis are not the most accurate (estheticaly speaking)
 Lighting Mode
    Optional backwards compatibility for non-standard render engines. Applies to lights.
    Standard: Physically-based glTF lighting units (cd, lx, nt).
    Unitless: Non-physical, unitless lighting. Useful when exposure controls are not available
    Raw (Deprecated): Blender lighting strengths with no conversion
+Import Webp textures
+   If a texture exists in webp format, loads the webp texture instead of the fallback png/jpg one.
 
 
 Export
@@ -850,6 +867,11 @@ Transform
 Y Up
    Export using glTF convention, +Y up.
 
+Data - Scene Graph
+^^^^^^^^^^^^^^^^^^
+
+GPU Instances
+   Export using ``EXT_mesh_gpu_instancing`` extensions.
 
 Data - Mesh
 ^^^^^^^^^^^
@@ -881,9 +903,15 @@ Materials
 Images
    Output format for images. PNG is lossless and generally preferred, but JPEG might be preferable for
    web applications due to the smaller file size.
+   If webp is chosen, all textures will be saved as Webp, without any png/jpg fallback.
    If None is chosen, materials are exported without textures.
-JPEG Quality
-   When exporting jpeg files, the quality of the exported file.
+Image Quality
+   When exporting jpeg or Webp files, the quality of the exported file.
+Create Webp
+   Creates webp textures for every textures, in addition to the existing texture.
+   For already webp textures, nothing happen.
+Webp fallback
+   For all webp textures, create a png fallback texture.
 Export Original PBR Specular
    When On, specular data are exported from glTF Material Output node,
    Instead of using sockets from Principled BSDF Node.
@@ -898,6 +926,14 @@ Shape Key Normals
 Shape Key Tangents
    Export vertex tangents with shape keys (morph targets).
 
+Data - Shape Keys - Optimize
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Use Sparse Accessor if better
+   Sparse Accessor will be used if it save space (if the exported file is smaller)
+Omitting Sparse Accessor if data is empty
+   If data is empty, omit to export SParce Accessor. Not all viewer managed it correctly, so this option is Off by default
+
 Data - Armature
 ^^^^^^^^^^^^^^^
 
@@ -914,8 +950,11 @@ Data - Skinning
 
 Export skinning data
 
+Bone influences
+   How many joint verex influences will be exported. Models may appear incorrectly in many viewers with value different to 4 or 8.
+
 Include All Bone Influences
-   Allow more than 4 joint vertex influences. Models may appear incorrectly in many viewers.
+   Export all joint vertex influences. Models may appear incorrectly in many viewers.
 
 Data - Lighting
 ^^^^^^^^^^^^^^^

manual/addons/lighting/dynamic_sky.rst

@@ -44,7 +44,7 @@ Instructions
 .. reference::
 
    :Category: Lighting
-   :Description: Creates a Dynamic Sky for Cycles/Eevee.
+   :Description: Creates a Dynamic Sky for Cycles/EEVEE.
    :Location: :menuselection:`3D Viewport --> Sidebar --> Create tab`
    :File: lighting_dynamic_sky.py
    :Author: Pratik Solanki

manual/addons/materials/material_utils.rst

@@ -4,7 +4,7 @@ Material Utilities
 ******************
 
 Materials Utilities/Specials is designed to help with batch materials tasks.
-The add-on works in either Eevee or Cycles renderers.
+The add-on works in either EEVEE or Cycles renderers.
 Common tasks are available from the :kbd:`Shift-Q` pop-up menu and also the Materials Specials menu.
 
 

manual/addons/mesh/snap_utilities_line.rst

@@ -62,22 +62,22 @@ Options
 
    **1.** It detects the drawing of a closed segment.
 
-   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-1.jpg
+   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-1.png
       :align: center
 
    **2.** The last vertex of the segment binds to an edge that connects another vertex of the segment.
 
-   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-2.jpg
+   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-2.png
       :align: center
 
    **3.** It detects an isolated edge loop.
 
-   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-3.jpg
+   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-3.png
       :align: center
 
    **4.** We redraw existing edges to match the conditions mentioned above.
 
-   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-4.jpg
+   .. figure:: /images/addons_mesh_snap_utilities-creating-faces-4.png
       :align: center
 
 

manual/addons/rigging/rigify/basics.rst

@@ -64,14 +64,14 @@ Rigify Human Alignment Tips
   they are almost useless if you plan to make facial animation through shape keys.
   Consider removing face features from your character if they aren't really needed.
   If you don't need the face all the face bones can be deleted.
-  All the face bones are on the first armature layer by default.
-  You can select them by displaying only bone layer 1, selecting all of its content and
+  All the face bones are in the *Face* armature bone collection by default.
+  You can select them by displaying only that collection, selecting all of its content and
   then deleting the bones in Edit Mode to correctly remove the face.
 
   If you want to scale all the face bones at once, consider scaling the face master bone
   in Pose Mode (see Pose Mode matching method).
   The face master bone is placed in the same position of the head bone.
-  To select it easily, hide all other bone layers.
+  To select it easily, hide all other bone collections.
 
   For more tips, see the :doc:`Positioning Guide </addons/rigging/rigify/bone_positioning>`.
 
@@ -147,13 +147,13 @@ Binding the Geometry to the Rig
 
 To bind the geometry to the rig you can use your preferred tools. Just few things you have to know:
 
-- All the deforming bones are on the armature layer 30.
+- All the deforming bones are in the *DEF* bone collection.
 - Eyes and Teeth bones of the legacy face are not deforming. You are supposed to bind the eyes and
   teeth geometry through Child Of constraints.
 - Usually armature deform with automatic weights do a really good job out of the box
   if you correctly place your bones (and there is enough topology to work with!).
 
-For more detailed information on armature layers, Armature modifier and weight painting refer to the Blender manual.
+For more detailed information on bone collections, Armature modifier and weight painting refer to the Blender manual.
 
 
 .. _bpy.types.Armature.rigify:
@@ -172,27 +172,36 @@ By using options in the Advanced sub-panel, it is possible to:
 - Choose whether to use linked duplicates for left and right side widgets.
 - Execute a script data-block after generation.
 
-
 Advanced Options Sub-Panel
 --------------------------
 
+.. figure:: /images/addons_rigging_rigify_basics_advanced-panel.png
+   :align: right
+   :width: 300px
+
 Advanced rig generation options are by default hidden in a sub-panel. Click on the *Advanced* line to open it.
 
 Some of the options will be automatically set by Rigify if they have no value when a rig is generated,
 while others are fully controlled by the user.
 
-Target Rig :guilabel:`auto`
-   This option specifies the generated rig to overwrite when re-generating from this metarig.
+Rig Name
+   When a brand new rig is generated, as opposed to overwriting an existing one, the value of this option
+   is used to name it.
 
-   If the option is not set, Rigify will generate a new rig object and store it in this option.
-   The new object will be named based on the name of the metarig according to the following rules:
+   If this field is empty, the new object will be named based on the name of the metarig according
+   to the following rules:
 
    * If the name contains ``META``, it is replaced with ``RIG``.
    * If the name contains ``metarig``, it is replaced with ``rig``.
    * Otherwise, ``RIG-`` is prepended to the name.
 
-   When overwriting an existing rig object specified by the option, its name is not changed,
-   allowing it to be freely renamed if the default naming scheme doesn't fit.
+   When overwriting an existing rig object specified by the *Target Rig* option, its name is not changed,
+   allowing it to be freely renamed without having to keep the value of this option in sync.
+
+Target Rig :guilabel:`auto`
+   This option specifies the generated rig to overwrite when re-generating from this metarig.
+
+   If the option is not set, Rigify will generate a new rig object and store it in this option.
 
    .. note::
 
@@ -204,13 +213,13 @@ Rig UI Script :guilabel:`auto`
    works in the same manner as *Target Rig*.
 
    The script controls the UI in the 3D Viewport that allows conveniently switching visible
-   bone layers, changing custom properties, converting between IK and FK and so on.
+   bone collections, changing custom properties, converting between IK and FK and so on.
 
 Widgets Collection :guilabel:`auto`
    This reference specifies the collection containing generated widgets, and
    works in the same manner as *Target Rig*.
 
-Force Widget Update
+Overwrite Widget Meshes
    If enabled, Rigify will generate new widgets every time the rig is re-generated. By default,
    it tries to reuse the already generated widget objects that exist in the widget collection,
    allowing them to be manually edited to fit the character better.

manual/addons/rigging/rigify/metarigs.rst

@@ -5,7 +5,8 @@ Creating Meta-rigs
 
 #. Add a single bone from the :menuselection:`Add --> Armature` menu.
 #. Go in armature Edit Mode and build the meta rig by samples or Rigify-types.
-#. Define Rigify layers, bone grouping and selection sets.
+#. Define the :ref:`Rigify bone collection UI <bpy.types.BoneCollection.rigify_ui_row>`,
+   :ref:`color sets <bpy.types.Armature.rigify_colors>`, and selection sets.
 #. In the armature properties click on the *Generate* button to generate the rig.
 
 
@@ -59,7 +60,7 @@ Just add a single bone from the *Add* menu.
 
 .. tip::
 
-   At this stage naming the newly added armature "meta-rig" is a good idea.
+   At this stage naming the newly added armature ``metarig`` is a good idea.
    You can do it at any time (or not at all) but it's suggested to do it before going on
    so it will always be clear on which armature you have to work when editing the meta-rig structure.
 
@@ -77,7 +78,7 @@ Building a meta-rig from scratch in Edit Mode can be done in two ways:
 Adding Samples (Basic)
 ^^^^^^^^^^^^^^^^^^^^^^
 
-Adding samples in Edit Mode is a good way to start building a meta-rig.
+Adding pre-defined samples in Edit Mode is a good way to start building a meta-rig.
 This way you can become familiar with the available building blocks and how they are meant to be used.
 To add a rig sample:
 
@@ -90,11 +91,38 @@ To add a rig sample:
 For the list of available samples, see the :doc:`Rig Types </addons/rigging/rigify/rig_types/index>` page.
 
 
+.. _bpy.types.PoseBone.rigify_type:
+.. _bpy.types.RigifyParameters:
+
 Using Rig Types (Advanced)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-#. Create your bone chains in Edit Mode.
-#. Assign the correct rig type to the first bone of each chain in Pose Mode.
+.. figure:: /images/addons_rigging_rigify_metarigs_rigify-type-panel.png
+   :align: right
+   :width: 300px
+
+For full control, you can use the Rigify Type panel of bone properties in Pose Mode to assign
+any Rigify sub-rig type to any bone, as well as change its options.
+
+For the list of available sub-rig types and their options, see the :doc:`Rig Types </addons/rigging/rigify/rig_types/index>` page.
+
+At the top of the panel you can find a field specifying the rig type for the active bone. The drop-down list
+can be optionally filtered by the :doc:`Feature Set </addons/rigging/rigify/feature_sets>` it belongs to.
+
+Below that you can change options relevant to the selected rig type, if it has any.
+
+Bone Collection References
+""""""""""""""""""""""""""
+
+Some rig types that generate many control bones have options that reference
+:ref:`Bone Collections <bpy.types.BoneCollection.rigify_ui_row>`. These reference lists have a standard UI with
+the following features:
+
+* A checkbox controlling whether the reference should be used.
+* A button to copy the reference list contents from the active to all selected bones.
+* A plus button to add a new reference to the list.
+* A list of references, each entry with a field to specify the target collection,
+  and a button to remove the entry from the list.
 
 .. note::
 
@@ -102,18 +130,40 @@ Using Rig Types (Advanced)
    add a rig sample to your armature to see how it is supposed to be used.
 
 
-.. _bpy.ops.Armature.rigify_apply_selection_colors:
-.. _bpy.ops.Armature.rigify_add_bone_groups:
-.. _bpy.types.Armature.rigify_colors_lock:
-.. _bpy.types.Armature.rigify_theme_to_add:
-.. _bpy.types.Armature.rigify_colors_index:
-.. _bpy.types.RigifySelectionColors:
-.. _bpy.types.RigifyArmatureLayer:
+Preserved Bone Properties
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Certain properties of the metarig bones are often copied to the generated rig control, deform and mechanism bones.
+
+The exact set depends on the sub-rig and the specific generated bone, and the sub-rig may override some properties
+even when it preserves others from the same subset, but there are certain common patterns:
+
+Parenting Settings
+   This subset consists of the parent ORG bone, Use Connect, Use Inherit Rotation, Use Local Location, and Inherit Scale.
+
+   It is usually copied to deform bones, FK controls, and in other cases where the sub-rig doesn't have a reason
+   to completely override them.
+Bendy Bone Settings (Edit Mode)
+   Consist of the segment count, Vertex Mapping Mode, Ease In/Out, Roll In/Out, Curve In/Out and Scale In/Out.
+
+   The segment count is often overridden via a sub-rig option, but other settings are usually copied to deform
+   bones as is.
+Transformation Settings
+   Consist of the rotation mode, pose mode rotation values, and channel locks.
+
+   These settings are usually copied to FK controls.
+Custom Properties
+   Usually copied to one of the controls generated based on the metarig bone (mainly FK). Intra-armature drivers
+   that access the property are retargeted to the copied instance.
+Custom Widget
+   Usually copied to one of the controls generated based on the metarig bone (mainly FK), and suppresses automatic
+   generation of a widget for the bone if specified.
+
 
 Custom Root Bone
 ^^^^^^^^^^^^^^^^
 
-If the meta-rig contains a bone called "root", it is used as the root control bone instead of creating a new one.
+If the meta-rig contains a bone called ``root``, it is used as the root control bone instead of creating a new one.
 This allows changing the rest position of the root bone, assigning a custom widget,
 or adding custom properties to the bone.
 
@@ -121,71 +171,222 @@ The custom root bone must have no parent, and use the :ref:`basic.raw_copy <rigi
 type or none.
 
 
-Layers, Bone Groups & Selection Sets
-====================================
+.. _bpy.ops.Armature.rigify_apply_selection_colors:
+.. _bpy.ops.Armature.rigify_add_bone_groups:
+.. _bpy.types.Armature.rigify_colors:
+.. _bpy.types.Armature.rigify_colors_lock:
+.. _bpy.types.Armature.rigify_theme_to_add:
+.. _bpy.types.Armature.rigify_colors_index:
+.. _bpy.types.RigifySelectionColors:
+.. _bpy.types.RigifyArmatureLayer:
 
-:ref:`Armature Layers <bpy.types.Armature.layers>` are usually used to isolate bones.
-Rigify can take advantage of armature layer to generate extra features and the user interface for the final rig.
-Rigify layers are displayed in a vertical layout inside their own separate panel named Rigify Layer Names.
+Color Sets
+==========
 
-- The first column shows the layer number.
-- The second column is a display toggle.
+.. figure:: /images/addons_rigging_rigify_metarigs_color-sets-panel.png
+   :align: right
+   :width: 300px
 
-  This toggle controls the armature layer visibility.
-  It has the same effect of enabling/disabling the layer visibility from the top armature layers menu.
-  It is just redrawn here for a simplicity.
+The Color Sets panel is used to define the bone color scheme for the final rig. The colors from the list
+can be associated with bone collections from the relevant panel.
 
-- The third column sets a specific layer name to be used to build the rig UI of the final rig.
-  If set, a button with the specified name will be created in the ``rig_ui_template`` to control the visibility of
-  this specific armature layer. If layer contains at least one bone but its name field is empty,
-  a button with no name will be created in the rig UI.
-
-- The fourth column defines in which UI row the layer button will be created.
-
-  This numbers define the layer ordering in the UI and will ignore the effective layer number.
-  If two layer have the same row number their UI buttons will be created in the same row.
-
-- The fifth column is a toggle for the selection set.
-
-  If checked a selection set with that name will be created and associated to the final rig.
-
-- The sixth column defines the Rigify Bone Grouping.
-
-  If Rigify Bone Groups are set, the user can make the association between
-  the bones on the layer and the specified bone group from the list.
-  The controls on the final rig will inherit the bone grouping through this value.
-
-- The seventh column displays -- if set -- the associated bone group name.
-
-In order to use the Bone Groups in the *Rigify Layer Names* fields,
-*Rigify Bone Groups* must be set through the specific panel.
-Usually this panel is displayed just above Rigify Layer Names panel.
-
-Rigify Bone Groups are used to define bone colors on the final rig.
-The top two rows of the Rigify Bone Groups panel are used to define the bone colors general behavior.
+The top two rows of the Color Sets panel are used to define the general behavior of the bone colors.
 Usually color themes use a gradient of colors to define the different bone states: default, selected and active.
 When multiple color themes are used in the same rig, identifying which bone is selected or
 active can be tricky since each color will have its corresponding state.
 
-To override this behavior Rigify Bone Groups unifies the active and selected states with the same color.
+To override this behavior Rigify unifies the active and selected states using the same color.
 This is defined by two values:
 
 Unified Selected/Active Colors
    When this option is active adding a bone group in the list will always keep the colors consistent.
-   When a color scheme is added as from a theme, the color scheme is loaded as is.
+   When a color scheme is added from a theme, the color scheme is loaded as is.
    Click on the *Apply* button to force the system to unify selected and active colors.
 
 Selected/Active Colors
-   This two color fields define respectively *Selected* and *Active* colors.
-   By default Rigify reads this colors from the theme defined by the user in the Blender preferences.
+   This two color fields define respectively the *Selected* and *Active* colors.
+   By default Rigify reads these colors from the theme defined by the user in the Blender preferences.
    This way the *Selected*/*Active* colors can always have a predictable and consistent behavior in the UI.
-   The colors can be customized by clicking on the relative color field.
+   The colors can be customized by clicking on the relevant color field.
    To reset them to the Blender current theme value just click on the button with the update icon.
 
-Bone Groups can be added and deleted as done in the general Bone Group panel
-by clicking on the ``+`` or ``-`` buttons.
-All Bone Groups can be deleted at once by clicking on the Specials menu.
+Color Sets can be added and deleted by clicking on the ``+`` or ``-`` buttons.
+All color sets can be deleted at once by clicking on the Specials menu.
 
-To add the predefined Rigify Default Bone Groups list click on *Add Standard* button.
+To add the colors from the predefined Rigify default color scheme (as shown in the image) to the list click
+the *Add Standard* button.
 
 To add a specific theme with its own color scheme, select it from the list and click on the *Add From Theme* button.
+
+
+.. _bpy.types.BoneCollection.rigify_ui_row:
+
+Bone Collections UI
+===================
+
+.. figure:: /images/addons_rigging_rigify_metarigs_bone-collections-panel.png
+   :align: right
+   :width: 300px
+
+:doc:`Bone Collections </animation/armatures/bones/bone_collections>` are used to group related bones together
+so that they can be hidden or revealed together.
+
+Rigify can take advantage of collections to generate extra features and the user interface for the final rig.
+A panel named :ref:`Rig Layers <rigify.rig_ui_template.RigLayers>` is generated with buttons for hiding the
+collections, arranged in an intuitive layout.
+
+The Bone Collections UI panel allows configuring the layout of that generated panel, as well as specifying some
+other settings for bone collections, such as the color set to use.
+
+The top of the panel is occupied by a list that duplicates the main bone collection list, but displays additional
+properties, such as the color set, whether the collection has a button, or whether it generates a selection set.
+
+Validate Collection References
+  Some sub-rig types have :ref:`references <bpy.types.RigifyParameters>` to bone collections in their properties.
+  Rigify uses a referencing scheme that is robust to collection renames, but deleting collections or joining armatures
+  can still lead to broken references.
+
+  This button runs a scan that validates and normalizes all collection references, reporting any errors, and
+  reducing the chance of breakage being caused by subsequent user actions.
+
+  This scan is also performed automatically every time the rig is generated.
+
+  .. warning::
+    To avoid breakage this operation should be used both immediately before and after joining two metarig armatures.
+    More specifically, it must be always done between the actions of renaming any collections and joining.
+
+Color Set
+  Specifies the :ref:`color set <bpy.types.Armature.rigify_colors>` to use for bones in this collection. If a bone
+  belongs to multiple collections, in general the collection located earlier in the list has priority.
+
+Add Selection Set
+  Specifies whether a selection set should be generated for this collection.
+
+UI Row
+  If nonzero, specifies which row of the :ref:`Rig Layers <rigify.rig_ui_template.RigLayers>` panel should contain the
+  button controlling the visibility of this collection. When zero, no button is generated, and the collection is hidden.
+
+UI Title
+  This field can be used to override the title used on the UI button to be distinct from the true collection name.
+  Unlike collection names, titles are not required to be unique, so this can be used to reduce clutter by relying
+  on contextual cues within the panel.
+
+UI Layout sub-panel
+-------------------
+
+.. figure:: /images/addons_rigging_rigify_metarigs_bone-collections-layout-panel.png
+   :align: right
+   :width: 300px
+
+The UI Layout sub-panel provides a WYSIWYG editor for the layout of the generated UI panel
+(as defined by the UI Row and UI Title settings above).
+
+Each row contains three buttons at the end:
+
+Arrow
+   Moves the active collection button to this row.
+Plus
+   Inserts a new row before the current one.
+Minus
+   Removes the current row and shifts all buttons up.
+
+To the left of the editing control buttons, rows display buttons corresponding to the collections, same as the final
+UI, except that rather than hiding or unhiding, clicking these buttons selects the collection.
+
+For the active collection the selection button is replaced with an input field for editing the UI Title, and an **X**
+button to unassign the collection from the UI.
+
+For any collections not assigned to the UI, their select buttons are displayed in a separate section at the bottom
+of the sub-panel.
+
+The ``Root`` collection will be added and/or assigned a UI button automatically if necessary when the rig is generated.
+If desired, it is possible to manually assign UI buttons to the internal ``ORG``, ``DEF`` and ``MCH`` collections.
+
+.. tip::
+   Blank rows appear much thinner in the final interface, since they don't have to contain editing buttons, and can be
+   used as logical separators.
+
+Actions
+=======
+
+.. figure:: /images/addons_rigging_rigify_metarigs_actions-list-panel.png
+   :align: right
+   :width: 300px
+
+The :doc:`Action </animation/constraints/relationship/action>` constraint allows applying poses defined
+by an action to bones based on the transformation of another bone. This requires adding the constraint to every
+bone affected by the action, which is very tedious. For this reason, Rigify includes a system to do this
+automatically through the Actions panel.
+
+The panel defines a list of actions to be applied to the generated rig bones. Each action must be listed only once.
+
+The list entries show the name of the action, the trigger (a bone or a corrective action driven by two others), and
+a checkbox that can be used to temporarily disable applying this action to the rig. The icon at the start of the entry
+is changed from an action icon to a link icon to highlight corrective actions that depend on the active normal one,
+or normal actions used by the active corrective action.
+
+.. note::
+   The Action constraints are added to the bones in such an order as to exactly reproduce the intended deformation,
+   assuming the actions were created (posed and keyframed) in the order listed.
+
+Normal Actions
+--------------
+
+.. figure:: /images/addons_rigging_rigify_metarigs_actions-normal-panel.png
+   :align: right
+   :width: 300px
+
+Normal actions are applied based on the transformation of a specific control bone from the generated rig.
+They have the following properties:
+
+Control Bone
+   Specifies the bone that drives the action.
+Symmetrical
+   If the control bone has a suffix that specifies that it belongs to the left or right side, this option can
+   be enabled to automatically apply symmetry.
+
+   When enabled, left-side bones keyframed in the action will be controlled by the left-side control, and right-side
+   bones by the right side control. Bones that don't have a a side suffix are assumed to belong to the center of the
+   character. They are rigged with two Action constraints with influence 0.5 that are controlled by each of the
+   control bones.
+Frame Start & End
+   Specifies the frame range of the action that will be used by the created constraints.
+Target Space, Transform Channel
+   Specifies the coordinate space and transformation channel of the target bone that should be used.
+Min, Max
+   Specifies the range of the transformation channel values that is mapped to the specified action frame range.
+Default Frame
+   Shows the frame within the action that maps to the neutral value (1 for scale and 0 otherwise)
+   of the transformation channel, as computed from the specified range values.
+
+Corrective Actions
+------------------
+
+.. figure:: /images/addons_rigging_rigify_metarigs_actions-corrective-panel.png
+   :align: right
+   :width: 300px
+
+Corrective actions are applied based on the progress of two other actions from the list, and are used to improve
+the pose when they are used together.
+
+Frame Start & End
+   Specifies the frame range of the action that will be used by the created constraints.
+Trigger A & B
+   Specifies the two actions that control the correction. The interface rows contain buttons to show the settings
+   for that action, or jump to it in the list.
+
+The progress of the corrective action from the start to the end frame is calculated as the product of the progress
+values of the two trigger actions. Thus, the start frame is applied when either of the triggers is at the start frame,
+and the end frame is used when both are at their end frame.
+
+Corrective actions must be below their triggers in the list, which is enforced via an implicit reorder even if violated.
+
+.. tip::
+   Corrective actions behave in the most intuitive way when both triggers have the Default Frame equal to Start Frame.
+   To create a corrective action in such case:
+
+   * Create the two trigger actions, add them to the panel and generate the rig.
+   * Pose your controls so that both trigger actions are fully activated to the end frame.
+   * Pose and keyframe the necessary corrections in the end frame of the new action, while keying the start
+     frame to the neutral values.
+   * Add the newly created action to the end of the list in the panel and configure its settings.

manual/addons/rigging/rigify/rig_features.rst

@@ -6,23 +6,165 @@ Generated Rig Features
 After human rig generation a new armature named ``rig`` will be added to your scene.
 This is the character rig you have generated from the human meta-rig and will contain all the features.
 
+
+Common Features
+===============
+
+.. _rigify.rig_ui_template.RigBakeSettings:
+.. _rigify.rig_ui_template.RigUI:
+.. _rigify.rig_ui_template.RigLayers:
+
+Rig UI Panels
+-------------
+
+.. figure:: /images/addons_rigging_rigify_rig-features_rig-ui-panels.png
+   :align: right
+   :width: 200px
+
+The generated rig is accompanied by a script that implements a set of panels that appear in the Item
+tab of the 3D view sidebar when a bone belonging to the generated rig is active.
+
+Rig Bake Settings
+^^^^^^^^^^^^^^^^^
+
+This panel is displayed if the armature has an active :doc:`Action </animation/actions>`, and
+is used by operators that apply an operation to multiple keyframes.
+
+Bake All Keyed Frames
+   When enabled, the operator computes and keyframes its result on every frame that has a key for any of the
+   bones, as opposed to just relevant ones.
+Limit Frame Range
+   When enabled, the operator is limited to a certain frame range.
+
+   Start, End
+      Specify the frame range to process.
+   Get Frame Range
+      Sets the baking frame range from the scene frame range.
+
+Rig Main Properties
+^^^^^^^^^^^^^^^^^^^
+
+This panel shows properties and operators that are relevant to the selected bones.
+
+Rig Layers
+^^^^^^^^^^
+
+This panel contains buttons for toggling visibility of bone collections.
+
+The layout and labels of the buttons are defined in the metarig
+:ref:`Bone Collection UI <bpy.types.BoneCollection.rigify_ui_row>` panel.
+
+
+Common Controls
+---------------
+
+Rigify rigs are built from standardized components called sub-rigs, which are linked together in a parent-child
+hierarchy. Although the precise behavior of each sub-rig is determined by its implementation, there are certain
+conventions that are followed by many of them.
+
+Root Bone
+^^^^^^^^^
+
+Every Rigify rig has a bone called `root`, which serves as a parent for all bones of the rig.
+It is assigned to a bone collection called `Root`. Unless the metarig has a custom bone
+of that name, it is positioned at the origin of the rig object. Its widget looks like
+a circle with four arrow shaped protrusions.
+
+.. figure:: /images/addons_rigging_rigify_rig-features_arm-controls.png
+   :align: right
+   :width: 200px
+
+Limb Master
+^^^^^^^^^^^
+
+Many limb-like sub-rigs have a gear-shaped bone at their base.
+
+This bone can in some cases be used to transform the whole sub-rig as a rigid unit, and is also used as a container
+for its custom properties that are displayed in the *Rig Main Properties* panel. If you are looking in the Graph editor
+for the animated values of the properties, this is most likely the bone to look at.
+
+As an exception, if multiple controls of the sub-rig need their own copy of conceptually the same property,
+it may be placed on those controls directly instead.
+
+Tweak Controls
+^^^^^^^^^^^^^^
+
+These controls look like blue spheres in the default color scheme, and are the final control layer above the
+deformation bones themselves.
+
+Tweaks are subordinate to the general IK or FK limb position but can be moved apart, twisted and scaled freely,
+even reaching virtually impossible limb shapes.
+
+Rubber Tweak
+   .. figure:: /images/addons_rigging_rigify_rig-features_rubber-tweak.png
+      :align: right
+      :width: 200px
+
+   Some sub-rigs provide a slider in their *Rig Main Properties* when tweaks are selected, which controls
+   the smoothness of the Bendy Bone joint at that position. When zero, the joint deforms with a sharp bend,
+   while setting it to 1 makes the transition smooth for a more rubber hose cartoon like appearance.
+
+Custom Pivots
+^^^^^^^^^^^^^
+
+Some bones that can be freely moved in space (like IK controls) can be optionally accompanied by a custom pivot
+control. These controls usually look like a plain axes empty with the axis lines capped with squares or crosses,
+like the one in the image above. The control can be freely moved to change the location of the pivot, and then
+rotated or scaled to transform the target bone around the pivot.
+
+IK and FK Switching
+^^^^^^^^^^^^^^^^^^^
+
+.. figure:: /images/addons_rigging_rigify_rig-features_ik-fk-switch.png
+   :align: right
+   :width: 200px
+
+A number of rig types provides both IK and FK controls (red for IK and green for FK in the image above),
+with an ability to switch and snap between them.
+
+Switching is controlled by a slider in *Rig Main Properties*, usually blending between full IK at 0 and full FK at 1.
+
+Snapping one type of controls to the shape of the other is done via buttons, which form a group of three
+in their complete set:
+
+* The main button will snap on the current frame, and auto-key the result if enabled.
+* The *Action* button will bake the change on multiple keyframes, according to *Rig Bake Settings*.
+* The *Clear* button will delete keyframes on the corresponding controls within the bake interval.
+
+Parent Switching
+^^^^^^^^^^^^^^^^
+
+.. figure:: /images/addons_rigging_rigify_rig-features_parent-switch.png
+   :align: right
+   :width: 200px
+
+Some freely movable controls, e.g. usually the IK controls, can have a mechanism to switch their parent bone
+between a set of choices, including the root bone, or none at all.
+
+This mechanism is exposed in the *Rig Main Properties* panel through a row with three controls:
+
+* A button that presents a dropdown menu, which allows switching the parent on the current frame while
+  preserving the bone position and orientation in the world space.
+* An input field that exposes the raw switch property for keyframing and direct manipulation. Values correspond to
+  positions in the dropdown list.
+* A button to apply the position preserving parent switch over the bake range of keyframes.
+
+.. note::
+   When manually placing a Child Of constraint on the control bone, the built-in parent should be switched to none.
+
 Limbs
 =====
 
-Each limb will have a gear widget at its base. This is the utility bone that
-contains all the sub-rig properties. The rig features will be displayed anyway
-when the affected bone is selected but if you are looking in the Graph editor for
-those properties' animated values, this is most likely the bone to look at.
+Limbs have a master bone and tweaks. Depending on the user defined meta-rig options,
+multiple deform bone segments with tweaks will be created.
 
-Depending on the user defined meta-rig options, multiple deform bone segments will be created.
-Each bone can be controlled by tweak controls placed at the respective bone's head/tail.
-Tweaks are subordinate to the general IK or FK limb position but can be moved apart,
-twisted and scaled freely, even reaching virtually impossible limb shapes.
+The IK control may have an optional custom pivot, as well as additional predefined pivots.
 
 Rigify's limbs have the following controls in the Sidebar panel:
 
 .. figure:: /images/addons_rigging_rigify_rig-features_limb-properties.png
    :align: right
+   :width: 200px
 
 FK Limb Follow :guilabel:`Slider`
    When set to 1 the FK limb will not rotate with the torso and will retain is rotation
@@ -32,11 +174,7 @@ IK-FK :guilabel:`Slider`
    Controls whether the limb follows IK or FK controls, blending between full IK at 0 and full FK at 1.
 
 IK<->FK Snapping :guilabel:`Buttons`
-   To snap one type of controls to another use the appropriate buttons.
-
-   Each snap direction has buttons to update just the current pose, bake the whole animation in the
-   current *Action*, or *Clear* keyframes instead of snapping. The buttons dealing with keyframes
-   use options from an additional panel to control the range of frames to bake.
+   Snaps one type of controls to another.
 
 IK Stretch :guilabel:`Slider`
    Blends between the limb stretching freely at 1, or having its maximum length constrained at 0.
@@ -47,44 +185,366 @@ Toggle Pole :guilabel:`Switch`
    When set to 1 the classic pole vector will be displayed and used to orient the IK limb.
    The arrow will continue to handle the scale and the location of the IK limb base.
 
-   Similar to IK-FK Snapping, the row includes buttons to convert the current pose between types,
+   Similar to *Parent Switching*, the row includes buttons to convert the current pose between types,
    or bake the whole action.
 
 IK Parent :guilabel:`Switch`
-   Switches the effective parent of the main IK control, with different integer values corresponding
-   to choices from a list.
-
-   The row includes buttons that allow converting the current pose via choosing from a menu,
-   or baking the whole action.
+   Switches the effective parent of the main IK control.
 
 Pole Parent :guilabel:`Switch`
    Switches the effective parent of the classic IK Pole control.
 
+Arms
+----
+
+.. figure:: /images/addons_rigging_rigify_rig-features_hand-controls.png
+   :align: right
+   :width: 200px
+
+:ref:`Arms <rigify.rigs.limbs.arm>` have the simplest control structure: the IK controls consist of the main IK
+control, the optional custom pivot control, and the optional wrist control (the bent circle), which pivots around
+the tail rather than the head of the hand bone.
+
+There are no additional controls in the *Rig Main Properties* panel.
+
+Legs
+----
+
+:ref:`Legs <rigify.rigs.limbs.leg>` have a more complicated setup, which has:
+
+.. figure:: /images/addons_rigging_rigify_rig-features_foot-controls.png
+   :align: right
+   :width: 200px
+
+IK & FK Toe :guilabel:`Optional`
+   Two separate IK and FK controls for the toe (this is  on by default in the bundled metarigs,
+   and is recommended for stable IK<->FK snapping).
+IK Heel
+   A heel control which can be rotated to command forward or backward roll, sideways rock, or yaw of the heel.
+Toe Pivot :guilabel:`Optional`
+   An extra pivot control rotating around the base of the toe.
+Custom Pivot :guilabel:`Optional`
+   A custom pivot control.
+
+The properties panel has two additional features:
+
+.. figure:: /images/addons_rigging_rigify_rig-features_foot-properties.png
+   :align: right
+   :width: 200px
+
+IK->FK Snap With Roll :guilabel:`Buttons`
+   Standard IK to FK snapping resets the transformations of all IK controls other than the main one. This is
+   not convenient to use in an animation that involves the use of the heel control, because roll and rock would
+   be folded into the transformation of the main control.
+
+   This alternative snapping operator tries to deduce the rotation of the heel control so as to keep the main
+   IK control parallel to the ground plane inferred from the *current* orientation of the IK control. The operator
+   has options to specify which rotational axes to use for the heel control rotation.
+
+Roll On Toe :guilabel:`Slider` :guilabel:`Optional`
+   If enabled in the sub-rig settings, this slider can be used to control whether the heel rotation (excluding
+   backward roll) is applied at the base or the tip of the toe.
+
+Fingers & Tentacles
+===================
+
+Simple Tentacle
+---------------
+
+.. figure:: /images/addons_rigging_rigify_rig-features_simple-controls.png
+
+The simplest type of rig for a finger or appendage in general is the
+:ref:`simple tentacle <rigify.rigs.limbs.simple_tentacle>` sub-rig. It has only basic FK controls and tweaks,
+with the only automation being the ability to copy certain axes of the local rotation of a FK control to the next one.
+
+Advanced Finger
+---------------
+
+.. figure:: /images/addons_rigging_rigify_rig-features_finger-controls.png
+
+For fingers specifically, Rigify has a dedicated :ref:`finger <rigify.rigs.limbs.super_finger>` sub-rig type,
+which provides:
+
+Master
+   A master control (orange), which can be used to rotate the finger as a whole, as well as to bend it via Y scaling.
+FK Chain
+   FK control chain (green) that can also operate as semi-tweaks through allowing translation.
+IK Control :guilabel:`Optional`
+   IK control for the tip (red).
+
+.. note::
+   IK in this sub-rig is rudimentary and operates as an adjustment for FK. The intended way of use is to pose
+   the finger in FK, and then enable IK after using IK->FK snap if it is necessary to pin the tip of the finger
+   in place.
+
+The properties panel has the following features:
+
+.. figure:: /images/addons_rigging_rigify_rig-features_finger-properties.png
+   :align: right
+   :width: 200px
+
+Finger IK :guilabel:`Slider` :guilabel:`Optional`
+   Slider controlling the influence of the IK.
+
+FK<->IK Snapping :guilabel:`Buttons` :guilabel:`Optional`
+   Snaps the IK control to the end of the finger, or adjusts the FK controls to the result of the IK correction.
+
+Curvature :guilabel:`Slider`
+   Has the same effect as *Rubber Tweak* on limbs, controlling the rubber hose cartoon effect.
+
+Spline Tentacle
+---------------
+
+.. figure:: /images/addons_rigging_rigify_rig-features_spline-controls.png
+
+   Spline Tentacle (Stretch To Fit, Manual Squash & Stretch)
+
+.. figure:: /images/addons_rigging_rigify_rig-features_spline-controls-tip.png
+
+   Spline Tentacle (Direct Tip Control)
+
+The :ref:`spline tentacle <rigify.rigs.limbs.spline_tentacle>` is an advanced rig for a flexible appendage (tentacle)
+based on the :doc:`Spline IK </animation/constraints/tracking/spline_ik>` constraint. The IK control bones manage
+control points of a Bezier spline curve, which in turn is followed by the IK chain.
+
+The tentacle can be generated in three major modes:
+
+Stretch To Fit
+   In this simplest mode all bones of the sub-rig deform chain follow the curve and squash & stretch to match
+   its length.
+Manual Squash & Stretch
+   This mode is almost the same, but the chain does not automatically scale to match the curve length.
+   Instead, it tries to cover as much as possible of the curve given its manually scaled length.
+   If the curve is too short, the chain will overhang it and straighten out, but this can result in jitter.
+Direct Tip Control
+   This mode is more similar to the behavior of IK limbs: the final bone of the chain is directly controlled by
+   the tip IK control, while the other bones of the chain stretch and follow the curve to bridge the gap.
+
+The tentacle sub-rig has the following control bones:
+
+Master
+   The tentacle has the same gear master control as other limbs (seen as a line in the images).
+IK Start
+   The IK control at the base of the tentacle, which can be used to control the base twist and sideways scale, and
+   is one of the potential switchable parents for other IK controls.
+
+   In the *Manual Squash & Stretch* mode it controls uniform scale of the tentacle in all directions.
+IK Start (Extra) :guilabel:`Optional`
+   Extra start controls, optional and hidden by default. Switchable parents default to the *IK Start* control.
+   The scale of the control may optionally affect the thickness of the chain via the radius of the curve point.
+IK Middle
+   Controls for the middle of the curve. The switchable parents default to *Master*, but may be set to
+   *IK Start* or *IK End* controls.
+   The scale of the control may optionally affect the thickness of the chain via the radius of the curve point.
+IK End (Extra) :guilabel:`Optional`
+   Extra end controls, optional and hidden by default. Switchable parents default to the *IK End* control.
+   The scale of the control may optionally affect the thickness of the chain via the radius of the curve point.
+
+   The *Direct Tip Control* mode adds one more extra end control next to the middle ones that cannot be hidden.
+IK End
+   Controls the last control point of the curve, and is one of the potential parents for the other chain controls.
+
+   In the *Direct Tip Control* mode also directly controls the last bone of the chain.
+IK End Twist :guilabel:`Optional`
+   This control is visually attached to the last bone of the chain, and must use Euler rotation.
+   * *Stretch To Fit*: it controls the twist of the tip of the tentacle, interpolated to nothing at the base.
+   * *Manual Squash & Stretch*: it also controls the scaling of the tip of the tentacle.
+   * *Direct Tip Control*: the control does not exist.
+FK Chain :guilabel:`Optional`
+   If enabled, the rig has an alternative fully FK control chain.
+
+The properties panel has the following features:
+
+.. figure:: /images/addons_rigging_rigify_rig-features_spline-properties.png
+   :align: right
+   :width: 200px
+
+Start/End Controls :guilabel:`Optional`
+   If extra controls exist, this property controls how many of them are visible and active.
+
+   When a control is disabled, it is snapped to a position extremely close to the corresponding end control point,
+   thus effectively neutralizing its effect. Thus, changing the setting during an animation can cause jumps.
+
+   The plus and minus buttons can help with maintaining a continuous transition in an animation by keyframing the
+   change in the property value with Constant interpolation, and also snapping and keyframing the control itself
+   to its 'hidden' position.
+
+End Twist Estimate :guilabel:`Optional`
+   In the *Direct Tip Control* mode the twist at the end of the tentacle is deduced from the free form orientation
+   of the tip control, rather than using a separate twist control with constrained Euler rotation. However, for
+   technical reasons, that can only give values within the 180 degrees range of neutral.
+
+   A long tentacle can accept more twist than 180 degrees, so a workaround is necessary. This property allows
+   specifying an approximate estimate of the twist value (effectively shifting the neutral position), and the
+   rig then applies the automatic correction within 180 degrees of this value.
+
+IK-FK, IK<->FK Snapping :guilabel:`Optional`
+   If the FK controls are enabled, these provide standard IK-FK switching and snapping.
+
+   However, unlike other limbs, for this rig automatic IK to FK snapping can only be approximate and requires
+   manual tuning. For this reason, buttons for baking the snapping over a range of keyframes are not provided.
+
+Parent Switch
+   Switches the parent of the selected IK control.
+
+
+Spine, Head & Tail
+==================
+
+.. figure:: /images/addons_rigging_rigify_rig-features_spine-controls.png
+   :align: right
+   :width: 200px
+
+Spine
+-----
+
+The :ref:`spine <rigify.rigs.spines.basic_spine>` sub-rig provides a cube shaped torso control with
+switchable parent, and bent circle shaped hip and chest controls subordinate to it. For low level deformation
+tweak controls are provided.
+
+The torso control can optionally be accompanied with a custom pivot control. The rig can also optionally
+provide a full set of FK controls that are subordinate to the normal simplified ones, but above tweaks.
+
+The rig properties panel for the spine controls usually includes options for the head and/or tail as well.
+
+
+.. figure:: /images/addons_rigging_rigify_rig-features_head-controls.png
+   :align: right
+   :width: 200px
 
 Head
-====
+----
+
+The :ref:`head <rigify.rigs.spines.super_head>` sub-rig attaches to the end of the spine, and provides
+rotational controls for the head and neck, as well as tweaks for fine control of the neck.
+
+If the neck is three or more bones long, an additonal tweak-like translational
+neck bend control is provided (the widget looks like a circle with arrows).
+
+The properties panel contains the following options:
 
 Neck Follow :guilabel:`Slider`
+   .. figure:: /images/addons_rigging_rigify_rig-features_head-properties.png
+      :align: right
+      :width: 200px
+
    This slider controls the rotations isolation for the neck bones.
-   When set to 0 the neck will stay oriented as the Torso (the big box control).
-   When set to 1 the neck will be oriented as the Chest (the big circle in the shoulder area).
+   The neck will follow the orientation of the Torso when set to 0, and the Chest when set to 1.
 
 Head Follow :guilabel:`Slider`
-   This slider controls the rotations isolation for the head.
-   When set to 0 the head will stay oriented as the Torso (the big box control).
-   When set to 1 the head will be oriented as the neck.
+   .. figure:: /images/addons_rigging_rigify_rig-features_tail-controls.png
+      :align: right
+      :width: 200px
 
+   This slider controls the rotations isolation for the head.
+   The head will follow the orientation of the Torso when set to 0, and the Chest when set to 1.
+
+Tail
+----
+
+The :ref:`tail <rigify.rigs.spines.basic_tail>` sub-rig attaches to the start of the spine, and provides
+FK controls for the tail, as well as a master control that replicates its local rotation around certain axes
+to all individual bones.
+
+The properties panel contains the following options:
+
+Tail Follow :guilabel:`Slider`
+   This slider controls the rotations isolation for the tail.
+   The tail will follow the orientation of the Torso when set to 0, and the Hips when set to 1.
 
 Face
 ====
 
-Mouth Lock :guilabel:`Slider`
-   This slider controls the mouth opening.
-   When set to 0 moving/rotating the jaw bone will result in mouth opening,
-   when set to 1 the lips will stay sealed while the jaw is moving.
+.. note::
+   This describes the new-style modular face produced by the Upgrade Face operator button.
 
-Eyes Following :guilabel:`Slider`
-   This slider controls the eyelid automation.
-   When set to 1 the eyelids and the lower eyebrow will follow
-   the eye movement giving a realistic effect to the character,
-   when set to 0 no automation will happen.
+Basic Concepts
+--------------
+
+Skin Bone Chains
+^^^^^^^^^^^^^^^^
+
+.. figure:: /images/addons_rigging_rigify_rig-features_face-chains.png
+   :align: right
+   :width: 300px
+
+The foundation of the Rigify face is a network of Bendy Bone :ref:`chains <rigify.rigs.skin.basic_chain>` with controls
+placed at every bone end. These controls affect all bones that meet at that specific point.
+
+When the controls are merely translated, the B-Bone chains retain the normal automatic bezier handle behavior.
+Local rotation and/or scaling of the controls are applied on top of that.
+
+In case of :ref:`certain chains <rigify.rigs.skin.stretchy_chain>`, the transformation of the end and/or middle
+controls is interpolated to other controls located between them. In such cases the controls often have different
+colors and/or shapes.
+
+Additionally, certain controls have :ref:`arbitrary constraints <rigify.rigs.skin.glue>` that partially copy
+transformation from nearby control points.
+
+Specialized Controllers
+^^^^^^^^^^^^^^^^^^^^^^^
+
+Certain areas of the face, like eyes or mouth, have additional specialized controllers that apply custom behavior
+on top of the chains and their controllers within the relevant area.
+
+Eyes
+----
+
+.. figure:: /images/addons_rigging_rigify_rig-features_eye-controls.png
+   :align: right
+   :width: 300px
+
+The :ref:`eyes <rigify.rigs.face.skin_eye>` have the following controls in addition to the eyelid chains:
+
+Master
+   This large circular control can be used to transform the whole eye as one unit.
+Common Target
+   This large control enveloping all individual eye targets has a switchable parent and can
+   be used to specify the point that the eyes should look at.
+Eye Target
+   These small circle controls within the common target control specify the point targeted by each
+   individual eye. Their local scale can also be used to affect the iris or pupil of the eye,
+   depending on how it was weight painted.
+
+The rig properties panel contains the following options:
+
+.. figure:: /images/addons_rigging_rigify_rig-features_eye-properties.png
+   :align: right
+   :width: 200px
+
+Eyelids Follow :guilabel:`Slider`
+   Controls how much the rotation of the eyeball affects the eyelids. Depending on the sub-rig generation
+   options, this slider can be split to separately control the horizontal and vertical directions.
+
+Eyelids Attached :guilabel:`Slider` :guilabel:`Optional`
+   If enabled in the sub-rig generation options, this slider can be used to disable the mechanism that
+   forces the eyelids to conform to the sphere of the eye.
+
+Parent :guilabel:`Parent Switch`
+   Selects the parent for the common target control.
+
+Mouth
+-----
+
+.. figure:: /images/addons_rigging_rigify_rig-features_mouth-controls.png
+   :align: right
+   :width: 300px
+
+The :ref:`mouth <rigify.rigs.face.skin_jaw>` has the following controls:
+
+Jaw Master
+   Controls rotation of the jaw, directly affecting the main jaw deform bone, as well
+   as chains fully belonging to the jaw. Chains forming the lip loop(s) are adjusted to
+   open the mouth as the jaw rotates or moves.
+Mouth Master
+   This control uniformly transforms the lips without moving the jaw.
+
+The rig properties panel contains the following options:
+
+.. figure:: /images/addons_rigging_rigify_rig-features_mouth-properties.png
+   :align: right
+   :width: 200px
+
+Mouth Lock :guilabel:`Slider`
+   This slider can be changed from 0 to 1 in order to suppress opening of the mouth
+   when the jaw rotates or moves.

manual/addons/rigging/rigify/rig_types/basic.rst

@@ -13,8 +13,8 @@ This is unlike chain-based rig types that usually consume the whole connected ch
 
 .. _rigify.rigs.basic.copy_chain:
 
-``basic.copy_chain``
-====================
+basic.copy_chain
+================
 
 Copies the bone chain keeping all the parent relations within the chain untouched.
 Useful as a utility rig type for custom rigs.
@@ -29,8 +29,8 @@ Deform (Boolean)
 
 .. _rigify.rigs.basic.pivot:
 
-``basic.pivot``
-===============
+basic.pivot
+===========
 
 Single-bone rig type that creates a 'custom pivot' control for rotating and scaling its child sub-rigs.
 
@@ -74,8 +74,8 @@ Deform Bone
 
 .. _rigify.rigs.basic.raw_copy:
 
-``basic.raw_copy``
-==================
+basic.raw_copy
+==============
 
 Single-bone rig type that copies the bone without the ``ORG-`` name prefix.
 
@@ -106,8 +106,8 @@ Relink Constraints
 
 .. _rigify.rigs.basic.super_copy:
 
-``basic.super_copy``
-====================
+basic.super_copy
+================
 
 Single-bone rig type that simply copies the bone. Useful as utility rig type for
 adding custom features or specific deform bones to your rigs.

manual/addons/rigging/rigify/rig_types/face.rst

@@ -8,21 +8,21 @@ These rig types implement components of a modular face.
 
 .. _rigify.rigs.face.basic_tongue:
 
-``face.basic_tongue``
-=====================
+face.basic_tongue
+=================
 
-Generates a simple tongue, extracted from the original PitchiPoy ``super_face`` rig.
+Generates a simple tongue, extracted from the original PitchiPoy :ref:`super_face <rigify.rigs.faces.super_face>` rig.
 
 B-Bone Segments (integer)
    Defines the number of b-bone segments each tweak control will be split into.
 Primary Control Layers
-   Optionally specifies layers for the main control.
+   Optionally specifies bone collections for the main control.
 
 
 .. _rigify.rigs.face.skin_eye:
 
-``face.skin_eye``
-=================
+face.skin_eye
+=============
 
 Implements a skin system :ref:`parent controller <rigify.rigs.skin.skin_parents>` that manages
 two skin chains for the top and bottom eyelids in addition to generating the eye rotation mechanism.
@@ -49,8 +49,8 @@ Eyelids Follow Default
 
 .. _rigify.rigs.face.skin_jaw:
 
-``face.skin_jaw``
-=================
+face.skin_jaw
+=============
 
 Implements a skin system :ref:`parent controller <rigify.rigs.skin.skin_parents>` that manages
 one or more loops of mouth skin chains in response to the movement of jaw and mouth controls.

manual/addons/rigging/rigify/rig_types/faces.rst

@@ -3,8 +3,10 @@
 Faces
 *****
 
-``faces.super_face``
-====================
+.. _rigify.rigs.faces.super_face:
+
+faces.super_face
+================
 
 Will create a face system based on the bones child to the parent that has the property set on it.
 

manual/addons/rigging/rigify/rig_types/index.rst

@@ -1,6 +1,3 @@
-.. _bpy.types.PoseBone.rigify_type:
-.. _bpy.types.RigifyParameters:
-
 #############
   Rig Types
 #############

manual/addons/rigging/rigify/rig_types/limbs.rst

@@ -6,26 +6,32 @@ Limbs
 These rig types handle generation of different kind of limbs and their features, like fingers.
 
 
-``limbs.simple_tentacle``
-=========================
+.. _rigify.rigs.limbs.simple_tentacle:
 
-Will create a bendy and stretchy b-bones tentacle chain or automatic bendy and stretchy finger controls.
+limbs.simple_tentacle
+=====================
+
+Will create a simple bendy and stretchy b-bones tentacle chain, which can optionally replicate local rotation
+from preceeding bones to the subsequent ones for use in cases like fingers.
 
 Requirement: A chain of at least two connected bones.
 
 Automation Axis (X, Y, Z, None)
    Enables the automation on the selected axis. Multiple axis or none can be selected holding :kbd:`Shift-LMB`.
-   When enabled the controls of the last bones will copy the rotations from the previous ones.
+   When enabled the subsequent control bones will copy the local rotations from the previous ones.
    The option is accessible in the controls of the final rig as a Copy Rotation constraint and
    can be disabled even after rig is generated, or at animation time.
 Assign Tweak Layers
-   If enabled, allows placing the Tweak controls on different layers from the main controls.
+   If enabled, allows placing the Tweak controls in different bone collections from the main controls.
 
 
-``limbs.super_finger``
-======================
+.. _rigify.rigs.limbs.super_finger:
 
-Will create a bendy and stretchy chain or automatic bendy and stretchy finger depending on a master control bone.
+limbs.super_finger
+==================
+
+Will create a bendy and stretchy finger chain with a master control bone that controls the rotation of
+all joints through its scale.
 
 Requirement: A chain of at least two connected bones.
 
@@ -39,27 +45,40 @@ IK Control
    IK starts its work with the shape of the finger defined by FK controls and adjusts it
    to make the fingertip touch the IK control. It is designed as a tool to temporarily keep
    the fingertip locked to a surface it touches, rather than a fully featured posing system.
+
+   To improve performance, the switchable parent for the IK control contains only one option beside None.
+   Thus it is advised to add a 'held object' control using the :ref:`basic.raw_copy <rigify.rigs.basic.pivot>`
+   rig to act as the common parent for the fingers with a fully functional parent switch.
+IK Local Location
+   Specifies the value of the Local Location option for IK controls, which decides if the location
+   channels are aligned to the local control orientation or world.
 Assign Tweak Layers
-   If enabled, allows placing the Tweak controls on different layers from the main controls.
+   If enabled, allows placing the Tweak controls in different bone collections from the main controls.
+Assign Extra IK Layers
+   If enabled, allows placing the extra IK control in different bone collections from the main controls.
 
 .. note::
 
-   Rotation Axis (Bend Rotation Axis in the case of ``limbs.super_finger``)
+   Rotation Axis (Bend Rotation Axis in the case of `limbs.super_finger`_)
    affects the :doc:`roll </animation/armatures/bones/editing/bone_roll>` of the generated bones.
    Automatic mode recalculates the generated bones roll while
    any of the Manual modes copy the roll of the meta-rig bones.
 
 
-``limbs.super_limb``
-====================
+.. _rigify.rigs.limbs.super_limb:
 
-A backwards compatibility wrapper around ``limbs.arm``, ``limbs.leg`` and ``limbs.paw``.
+limbs.super_limb
+================
+
+A backwards compatibility wrapper around `limbs.arm`_, `limbs.leg`_ and `limbs.paw`_.
 
 
-``limbs.arm``
-=============
+.. _rigify.rigs.limbs.arm:
 
-Will create a full featured bendy and stretchy arm depending on the user-defined options.
+limbs.arm
+=========
+
+Will create a fully featured bendy and stretchy arm depending on the user-defined options.
 
 Requirement: A chain of three connected bones (upper_arm, forearm, hand).
 
@@ -79,15 +98,17 @@ B-Bone Segments (integer)
 Custom IK Pivot
    Generates an extra control for the end of the IK limb that allows rotating it around an arbitrarily placed pivot.
 Assign FK Layers
-   If enabled, allows placing the FK chain on different layers from the IK bones.
+   If enabled, allows placing the FK chain in different bone collections from the IK bones.
 Assign Tweak Layers
-   If enabled, allows placing the Tweak controls on different layers from the IK bones.
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.
 
 
-``limbs.leg``
-=============
+.. _rigify.rigs.limbs.leg:
 
-Will create a full featured bendy and stretchy leg depending on the user-defined options.
+limbs.leg
+=========
+
+Will create a fully featured bendy and stretchy leg depending on the user-defined options.
 
 Requirement: A chain of four connected bones (thigh, shin, foot, toe) with one unconnected
 child of the foot to be used as the heel pivot.
@@ -104,6 +125,10 @@ Separate IK Toe
    Specifies that two separate toe controls should be generated for IK and FK instead of sharing one bone.
    This is necessary to get fully correct IK-FK snapping in all possible poses.
 
+Toe Tip Roll
+   Generates a slider to switch the heel control to pivot on the tip rather than the base of the toe
+   (for roll this obviously only applies on forward roll).
+
 Rotation Axis (Automatic, X, Z)
    Defines the bend axis for the IK chain. FK chains will have a totally free degree of rotation on all axes.
 Limb Segments (integer)
@@ -113,15 +138,17 @@ B-Bone Segments (integer)
 Custom IK Pivot
    Generates an extra control for the end of the IK limb that allows rotating it around an arbitrarily placed pivot.
 Assign FK Layers
-   If enabled, allows placing the FK chain on different layers from the IK bones.
+   If enabled, allows placing the FK chain in different bone collections from the IK bones.
 Assign Tweak Layers
-   If enabled, allows placing the Tweak controls on different layers from the IK bones.
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.
 
 
-``limbs.paw``
-=============
+.. _rigify.rigs.limbs.paw:
 
-Will create a full featured bendy and stretchy paw depending on the user-defined options.
+limbs.paw
+=========
+
+Will create a fully featured bendy and stretchy paw depending on the user-defined options.
 
 Requirement: A chain of four or five connected bones (thigh, shin, paw, *optional* digit, toe).
 
@@ -138,15 +165,17 @@ B-Bone Segments (integer)
 Custom IK Pivot
    Generates an extra control for the end of the IK limb that allows rotating it around an arbitrarily placed pivot.
 Assign FK Layers
-   If enabled, allows placing the FK chain on different layers from the IK bones.
+   If enabled, allows placing the FK chain in different bone collections from the IK bones.
 Assign Tweak Layers
-   If enabled, allows placing the Tweak controls on different layers from the IK bones.
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.
 
 
-``limbs.front_paw``
-===================
+.. _rigify.rigs.limbs.front_paw:
 
-Derivative of ``limbs.paw`` with extended IK suitable for use in front paws.
+limbs.front_paw
+===============
+
+Derivative of `limbs.paw`_ with extended IK suitable for use in front paws.
 The additional IK limits the degree of change in the angle between shin and
 paw bones (2nd and 3rd) as the main IK control moves and rotates.
 
@@ -158,18 +187,22 @@ Heel IK Influence
    not affect the rotation of the paw bone, while lower values provide some blending.
 
 
-``limbs.rear_paw``
-==================
+.. _rigify.rigs.limbs.rear_paw:
 
-Derivative of ``limbs.paw`` with extended IK suitable for use in rear paws.
+limbs.rear_paw
+==============
+
+Derivative of `limbs.paw`_ with extended IK suitable for use in rear paws.
 The additional IK tries to maintain thigh and paw bones (1st and 3rd) in a nearly parallel orientation
 as the main IK control moves and rotates.
 
 For best results, thigh and paw bones should start nearly parallel in the rest pose.
 
 
-``limbs.super_palm``
-====================
+.. _rigify.rigs.limbs.super_palm:
+
+limbs.super_palm
+================
 
 Will create a palm system based on the distance between palm bones.
 
@@ -182,3 +215,51 @@ Both Sides
 
 Primary Rotation Axis (X, Z)
    Defines the automatic rotation axis to be used on the palm bones.
+
+
+.. _rigify.rigs.limbs.spline_tentacle:
+
+limbs.spline_tentacle
+=====================
+
+This rig type implements a flexible tentacle with an IK system using the Spline IK constraint. The control bones
+define control points of a Bezier curve, and the bone chain follows the curve.
+
+The curve control points are sorted into three groups: start, middle and end. The middle controls are always
+visible and active, while the other two types can be shown and hidden dynamically using properties; when enabled
+they appear next to the corresponding permanent start/end control and can be moved from there.
+
+Extra Start Controls
+   Specifies the number of optional start controls to generate.
+Middle Controls
+   Specifies the number of middle controls to generate.
+Extra End Controls
+   Specifies the number of optional end controls to generate.
+Tip Control:
+   Specifies how the curve stretching and the final control bone work:
+
+   Stretch To Fit
+      Stretches the whole bone chain to fit the length of the curve defined by the controls.
+
+      An end twist control is generated to control the twist along the chain.
+   Direct Tip Control
+      Generates an IK end control, which directly controls the final bone of the chain similar to how
+      regular IK works for limbs, as well as controlling the end of the bezier curve. The middle bones of
+      the chain stretch to follow the curve and cover the gap.
+
+      The rig automatically deduces twist of up to 180 degrees based on the orientation of the end control.
+      Higher amounts of twist have to be dialled in through an End Twist Estimate slider to avoid flipping.
+   Manual Squash & Stretch
+      This mode allows full manual control over the chain scaling, while the chain covers as much of the curve
+      as it can given its current length.
+
+      The start control of the chain manages its uniform squash & stretch scale, while the end twist control
+      manages both the twist of the chain, as well as its scale at the tip (blended gradually along the length).
+Radius Scaling
+   Allows scaling the controls to control the thickness of the chain through the curve.
+Maximum Radius
+   Specifies the maximum scale allowed by the Radius Scaling feature.
+FK Controls
+   Generates an FK control chain and IK-FK snapping.
+Assign FK Layers
+   If enabled, allows placing the FK chain in different bone collections from the IK bones.

manual/addons/rigging/rigify/rig_types/skin.rst

@@ -65,8 +65,8 @@ Custom Rigging
 
 .. _rigify.rigs.skin.basic_chain:
 
-``skin.basic_chain``
-====================
+skin.basic_chain
+================
 
 This is the basic chain rig, which bridges controls with B-Bones but does not add
 any automation to the controls themselves.
@@ -107,8 +107,8 @@ Chain Priority
 
 .. _rigify.rigs.skin.stretchy_chain:
 
-``skin.stretchy_chain``
-=======================
+skin.stretchy_chain
+===================
 
 This rig extends the basic chain with automation that propagates movement of the start and end,
 and an optional middle control, to other controls. This results in stretching the whole chain
@@ -134,9 +134,9 @@ Propagate to Controls
    Allows other chains to see propagated twist and scale via *Merge Parent Rotation and Scale* when their
    controls are merged into this chain, instead of it being completely local to this chain.
 Primary Control Layers
-   Optionally specifies layers for the end controls.
+   Optionally specifies bone collections for the end controls.
 Secondary Control Layers
-   Optionally specifies layers for the middle control, falling back to *Primary Control Layers* if not set.
+   Optionally specifies bone collections for the middle control, falling back to *Primary Control Layers* if not set.
 
 The main controls with active falloff have the effect of *Merge Parent Rotation and Scale*
 automatically enabled just for them.
@@ -144,8 +144,8 @@ automatically enabled just for them.
 
 .. _rigify.rigs.skin.anchor:
 
-``skin.anchor``
-===============
+skin.anchor
+===========
 
 This rig effectively acts as a zero-length chain with highest priority,
 ensuring that it becomes the owner when merging controls with other chains.
@@ -168,10 +168,10 @@ Orientation
 
 .. _rigify.rigs.skin.glue:
 
-``skin.glue``
-=============
+skin.glue
+=========
 
-This rig is in concept similar to ``skin.anchor``, but instead of overriding controls,
+This rig is in concept similar to `skin.anchor`_, but instead of overriding controls,
 it is used to read or adjust the state of controls generated by other rigs.
 The head of the bone must overlap a control of another skin rig.
 
@@ -210,8 +210,8 @@ Add Constraint
 
 .. _rigify.rigs.skin.transform.basic:
 
-``skin.transform.basic``
-========================
+skin.transform.basic
+====================
 
 This rig provides a simplistic :ref:`parent controller <rigify.rigs.skin.skin_parents>`, which uses regular
 translation, rotation, or scale to modify locations but not orientations or scale of its child chain controls.

manual/addons/rigging/rigify/rig_types/spines.rst

@@ -6,12 +6,17 @@ Spines
 These rigs are used to generate spine structures, including the head and tail.
 
 
-``spines.super_spine``
-======================
+.. _rigify.rigs.spines.super_spine:
+
+spines.super_spine
+==================
 
 Will create a complete bendy and stretchy b-bones spine system based on bone numbers of
 your bone chain and user defined options.
 
+This is a composite wrapper of `spines.basic_spine`_, `spines.super_head`_ and `spines.basic_tail`_.
+Note that for the tail, the direction of the bones is reversed compared to the separate rig.
+
 Requirement: A chain of at least three connected bones (base system).
 
 .. figure:: /images/addons_rigging_rigify_rig-types_spines-required.png
@@ -31,7 +36,10 @@ Tail (Boolean)
 
    Tail Position (integer)
       Defines the bone where the tail system starts. The next bone will always be the hips system.
-
+X, Y, Z (Boolean)
+   When generating a tail, specifies which local axis rotations should be replicated along the chain.
+Assign Tweak Layers
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.
 
 .. figure:: /images/addons_rigging_rigify_rig-types_spines-default.png
 
@@ -40,3 +48,45 @@ Tail (Boolean)
 .. figure:: /images/addons_rigging_rigify_rig-types_spines-example.png
 
    Spine with tail bones.
+
+
+.. _rigify.rigs.spines.basic_spine:
+
+spines.basic_spine
+==================
+
+Defines a bendy and stretchy b-bones spine.
+
+Pivot Position (integer)
+   Defines the pivot position for torso and hips.
+Assign Tweak Layers
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.
+FK Controls
+   Specifies whether to generate an FK control chain.
+Assign FK Layers
+   If enabled, allows placing the FK chain in different bone collections from the IK bones.
+
+
+.. _rigify.rigs.spines.basic_tail:
+
+spines.basic_tail
+=================
+
+Defines a bendy and stretchy b-bones tail.
+
+X, Y, Z (Boolean)
+   Specifies which local axis rotations should be replicated along the chain from each control
+   bone to the following one.
+Assign Tweak Layers
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.
+
+
+.. _rigify.rigs.spines.super_head:
+
+spines.super_head
+=================
+
+Defines a head rig with follow torso controls.
+
+Assign Tweak Layers
+   If enabled, allows placing the Tweak controls in different bone collections from the IK bones.

manual/advanced/command_line/arguments.rst

@@ -306,9 +306,6 @@ Debug Options
 ``--debug-gpu-force-workarounds``
    Enable workarounds for typical GPU issues and disable all GPU extensions.
 
-``--debug-gpu-disable-ssbo``
-   Disable usage of shader storage buffer objects.
-
 ``--debug-gpu-renderdoc``
    Enable Renderdoc integration for GPU frame grabbing and debugging.
 

manual/animation/armatures/bones/bone_collections.rst

@@ -0,0 +1,94 @@
+
+.. _bone-collections:
+
+****************
+Bone Collections
+****************
+
+:term:`Bone Collections <Bone Collection>` group the bones of an
+:term:`Armature` into named collections. The armature is the owner of these
+collections, so they are available in all modes. Bone Collections are identified
+by their name, which are unique within the Armature.
+
+In the text below, "collection" is understood to refer to "bone collection";
+:term:`Scene Collections <Collection>` are not described here.
+
+Bone Collections can be managed via :ref:`the Armature and Bone property panels <bpy.types.BoneCollection>`.
+
+
+Visibility
+==========
+
+Bone Collections can be shown & hidden via the list in the Armature properties,
+as well as via the list in the Bone properties. Bone visibility is determined by
+the visibility of its collections, and its own 'hidden' property:
+
+- If the bone itself is marked as 'hidden', it is invisible regardless of the
+  bone collections.
+- A bone is visible when it is contained in any visible collection.
+- A bone that is not assigned to any bone collection is visible; otherwise it
+  would be impossible to select it & assign it to a collection.
+
+
+.. _bone_collections_library_overrides:
+
+Library Overrides
+=================
+
+Bone collections can be added using library overrides. For this to work, both
+the armature Object and the Armature itself need to be overridden.
+
+Limitations
+-----------
+
+There are a few limitations when it comes to bone collections & overrides:
+
+- Only bone collections that are local to the current blend file can be edited.
+- Bone collections that already existed on the linked-in Armature are read-only,
+  and only their visibility can be toggled. Those visibility changes won't be
+  saved, though.
+- Custom properties of overridden bone collections cannot be edited in the
+  properties panel. Python access is fine; this is just a current limitation of
+  Blender's UI code.
+
+
+How It Works
+------------
+
+Bone collections added via overrides are 'anchored' to the preceding
+collection, by name. Here is an example. The *italic* collections are defined on
+the linked Armature in `armature.blend`. The **bold** ones are added by
+overrides in `armature_shot_47.blend`.
+
+- *FK Controls*
+- *IK Controls*
+- **Left Pinky** (anchored to "IK Controls")
+- **Right Pinky** (anchored to "Left Pinky")
+
+Now if the Armature in `armature.blend` gets updated with two more collections
+it might look like this:
+
+- *FK Controls*
+- *IK Controls*
+- *Face Controls*
+- *Face Detail Controls*
+
+After reloading `armature_shot_47.blend`, it will look like this:
+
+- *FK Controls*
+- *IK Controls*
+- **Left Pinky** (still anchored to "IK Controls")
+- **Right Pinky** (still anchored to "Left Pinky")
+- *Face Controls*
+- *Face Detail Controls*
+
+
+.. _bpy.types.armature.layers:
+
+Some history
+============
+
+Bone Collections were introduced in Blender 4.0, as a replacement for armature
+layers and bone groups. Bone Collections are owned by the Armature, so they are
+available in all modes. To contrast, bone groups were stored on the object's
+pose, and thus were not available in armature edit mode.

manual/animation/armatures/bones/editing/change_layers.rst

@@ -1,37 +0,0 @@
-
-*************
-Change Layers
-*************
-
-.. _bpy.ops.armature.armature_layers:
-
-Change Armature Layers
-======================
-
-.. reference::
-
-   :Mode:      Edit Mode
-   :Menu:      :menuselection:`Armature --> Change Armature Layers`
-   :Shortcut:  :kbd:`Shift-M`
-
-Each armature has 32 :ref:`Layers <bpy.types.Armature.layers>` to
-organize armatures by "regrouping" them into sets of bones.
-Only bones in active layers will be visible/editable, but they will always be effective
-(i.e. move objects or deform geometry), whether in an active layer or not.
-This tool changes which layers are visible in the 3D Viewport.
-To show several layers at once, :kbd:`Shift-LMB` on the desired layers to view.
-To move bones to a given layer, use :ref:`bpy.ops.armature.bone_layers`.
-
-
-.. _bpy.ops.armature.bone_layers:
-
-Change Bone Layers
-==================
-
-.. reference::
-
-   :Mode:      Edit Mode
-   :Menu:      :menuselection:`Armature --> Change Bone Layers`
-   :Shortcut:  :kbd:`M`
-
-Todo.

manual/animation/armatures/bones/editing/index.rst

@@ -20,7 +20,6 @@
    switch_direction.rst
    symmetrize.rst
    naming.rst
-   change_layers.rst
    parenting.rst
    properties.rst
    delete.rst

manual/animation/armatures/bones/editing/parenting.rst

@@ -74,3 +74,32 @@ To disconnect and/or free bones, you can:
   If you just want to disconnect it from its parent, disable the *Connected* checkbox.
 
 Note that relationships with non-selected children are never modified.
+
+
+Bone Collections
+================
+
+.. reference::
+
+   :Mode:      Edit Mode, Pose Mode
+   :Menu:      :menuselection:`Armature --> Bone Collections`, :menuselection:`Pose --> Bone Collections`
+   :Shortcut:  :kbd:`Shift-M`
+
+Manages the :ref:`bpy.types.BoneCollection` the bone is assigned to.
+
+.. _bpy.ops.armature.collection_show_all:
+
+Show All :kbd:`Ctrl-AccentGrave`
+   Unhides any hidden bone collections.
+
+Bone Collections List
+   This list shows the :term:`bone collections <Bone Collection>`
+   and can be used to manage which collections the bone is assigned to.
+
+   Press the eye icon to show or hide the entire bone collection.
+   Press the - icon to remove the bone from that particular collection.
+   Press the + icon to add the bone to that particular collection.
+
+Assign to new Collection
+   Assigns the selected bones to a new collection named "New Collection".
+   This collection can be renamed in the :ref:`bpy.types.BoneCollection` panel of the Armature properties.

manual/animation/armatures/bones/index.rst

@@ -9,6 +9,7 @@
    :maxdepth: 2
 
    introduction.rst
+   bone_collections.rst
    structure.rst
    tools/index.rst
    selecting.rst

manual/animation/armatures/bones/properties/bendy_bones.rst

@@ -116,6 +116,22 @@ Segments
 Display Size X, Z
    Controls the visible thickness of the bone segments when the armature is rendered in the *B-Bones* mode.
 
+.. _bpy.types.EditBone.bbone_mapping_mode:
+
+Vertex Mapping
+   Controls how vertices are weighted to the individual segments of a B-Bone for deformations:
+
+   :Straight:
+      A fast mapping that works well for B-Bones with a straight or gently curved rest pose.
+   :Curved:
+      A slower mapping that improves deformations for B-Bones with a strongly curved rest pose. This should
+      be used selectively when needed.
+
+   .. figure:: /images/animation_armatures_bones_properties_bendy-bones_vertex-mapping.png
+      :width: 300px
+
+      Straight vs Curved vertex mapping on a B-Bone with a strongly curved rest pose.
+
 .. _bpy.types.EditBone.bbone_curveinx:
 .. _bpy.types.EditBone.bbone_curveinz:
 

manual/animation/armatures/bones/properties/display.rst

@@ -1,4 +1,6 @@
-.. _bpy.types.Bone.hide:
+.. _bpy.types.Bone.color:
+.. _bpy.types.EditBone.color:
+.. _bpy.types.PoseBone.color:
 
 ****************
 Viewport Display
@@ -6,17 +8,80 @@ Viewport Display
 
 .. reference::
 
-   :Mode:      Object and Pose Mode
+   :Mode:      Object, Pose, and Edit Mode
    :Panel:     :menuselection:`Bone --> Viewport Display`
 
-.. figure:: /images/animation_armatures_bones_properties_display_custom-shape-field.png
+.. figure:: /images/animation_armatures_bones_properties_display.png
 
-   Viewport Display panel.
+   Viewport Display panel in Object/Pose mode.
 
-Display panel lets you customize the look of your bones taking the shape of another existing object.
+.. figure:: /images/animation_armatures_bones_properties_display_editmode.png
+
+   Viewport Display panel in Edit mode.
+
+Display panel lets you customize the look of your bones.
+
+.. _bpy.types.Bone.hide:
 
 Hide
-   Hides the selected bone.
+   Hides the bone in the 3D Viewport. When this is unchecked, the bone's
+   visibility is determined by the visibility of its :ref:`bone collections <bpy.types.Bone.collections>`.
+
+.. _bpy.types.BoneColor.palette:
+
+Bone Color
+   Either a selection of the theme-dependent colors, or a custom color. This is
+   the primary way to color a bone.
+
+   This color is stored on the bone itself, and thus is visible in both Pose and
+   Edit modes. If there are multiple armature Objects that share the same
+   Armature data-block, all armatures will share this color.
+
+   .. _bpy.ops.armature.copy_bone_color_to_selected:
+
+   Copy Bone Color to Selected
+      Copy the bone color of the :term`Active` bone to all selected bones.
+
+Pose Bone Color (only in Pose mode)
+   Either a selection of the theme-dependent colors, or a custom color. This is
+   a way to *override* the bone color on a per-armature object basis.
+
+   When this is set to 'Default', the regular Bone Color is shown (see above).
+
+   This color is stored on the :term:`Pose Bone`, and thus is specific to this
+   particular armature object. It is only available in Pose mode. If there are
+   multiple armature Objects that share the same Armature data-block, they each
+   can have unique pose bone colors.
+
+   Copy Bone Color to Selected
+      Copy the bone color of the :term`Active` bone to all selected bones.
+
+
+.. _bpy.types.BoneColor:
+.. _bpy.types.ThemeBoneColorSet:
+
+Bone Colors
+===========
+
+Bones can be individually colored. For these colors to be visible, enable the
+:ref:`Bone Colors checkbox <bpy.types.Armature.show>` in the Armature display panel.
+
+.. figure:: /images/animation_armatures_bones_properties_display_custom_colors.png
+
+   Viewport Display panel in Pose mode, showing the choices in color palettes as
+   well as options for custom colors.
+
+The primary source of bone colors is the :ref:`Theme <bpy.types.Theme>`, which
+defines 20 bone color palettes. Each entry consists of three colors:
+
+Regular
+   The color of unselected bones.
+Select
+   The second color field is the outline color of selected bones.
+Active
+   The third color field is the outline color of the active bone.
+
+As soon as you alter one of the colors, it is switched to the *Custom Set* option.
 
 
 .. _bpy.types.PoseBone.custom_shape:

manual/animation/armatures/bones/properties/relations.rst

@@ -1,4 +1,6 @@
 
+.. _properties_data_bone_relations:
+
 *********
 Relations
 *********
@@ -10,29 +12,10 @@ Relations
 
 .. figure:: /images/animation_armatures_bones_properties_relations_panel.png
 
-   Relations panel.
+   Bone Relations panel.
 
-In this panel you can arrange sets of bones in different layers for easier manipulation.
-
-
-.. _bpy.types.EditBone.layers:
-
-Bone Layers
-===========
-
-Moving Bones between Layers
----------------------------
-
-Obviously, you have to be in *Edit Mode* or *Pose Mode* to move bones between layers.
-Note that as with objects, bones can lay in several layers at once,
-just use the usual :kbd:`Shift-LMB` clicks...
-First of all, you have to select the chosen bone(s)!
-
-- In the Properties, use the "layer buttons" of each selected bone Relations panel (*Bones* tab)
-  to control in which layer(s) it lays.
-- In the *3D Viewport*, use the menu :menuselection:`Armature --> Move Bone To Layer` or
-  :menuselection:`Pose --> Move Bone To Layer` or press :kbd:`M` to show the usual pop-up layers menu.
-  Note that this way, you assign the same layers to all selected bones.
+In this panel you can manage the relationship of this bone with its parent bone.
+It also shows the bone collections the bone is assigned to.
 
 
 Parenting
@@ -48,11 +31,6 @@ Parent
 Relative Parenting :guilabel:`Pose Mode Only`
    Changes how transformation of the bone is applied to its child Objects.
 
-.. _bpy.types.PoseBone.bone_group:
-
-Bone Group :guilabel:`Pose Mode Only`
-   To assign a selected bone to a given bone group use the *Bone Group* data ID.
-
 .. _bpy.types.EditBone.use_connect:
 
 Connected
@@ -107,6 +85,12 @@ Inherit Rotation
 Inherit Scale
    Specifies which effects of parent scaling the bone inherits:
 
+   These inheriting behaviors propagate along the bones' hierarchy.
+   So when you scale down a bone, all its descendants are by default scaled down accordingly.
+   However, if you disable one bone's *Inherit Scale* or *Inherit Rotation*
+   property in this "family", this will break the scaling propagation,
+   i.e. this bone *and all its descendants* will no longer be affected when you scale one of its ancestors.
+
    :Full:
       The bone inherits all effects of parent scaling and shear.
    :Fix Shear:
@@ -128,38 +112,29 @@ Inherit Scale
 
       This choice replicates the behavior of the old Inherit Scale checkbox, and may be removed in a future release.
 
-These inheriting behaviors propagate along the bones' hierarchy.
-So when you scale down a bone, all its descendants are by default scaled down accordingly.
-However, if you disable one bone's *Inherit Scale* or *Inherit Rotation*
-property in this "family", this will break the scaling propagation,
-i.e. this bone *and all its descendants* will no longer be affected when you scale one of its ancestors.
-
-.. tip::
+   .. tip::
 
       The various *Inherit Scale* options are provided as tools in avoiding shear that is caused
       by non-uniform scaling combined with parenting and rotation. There is no obvious best way
       to achieve that, so different options are useful for different situations.
 
-   None
+      - **None** --
         Useful for gaining full control over the scaling of the child in order
         to e.g. manually overwrite it with constraints.
-
-   Average
+      - **Average** --
         Useful to block squash and stretch propagation between sub-rigs, while
         allowing uniform changes in the size and volume to pass through.
-
-   Aligned
+      - **Aligned** --
         Can be used within bone chains, e.g. tentacles, in order to propagate
         lengthwise scaling as lengthwise, and sideways as sideways, no matter
         how the tentacle bends. Similar to using *None* with
         :doc:`Copy Scale </animation/constraints/transform/copy_scale>` from parent.
-
-   Fix Shear
+      - **Fix Shear** --
         May be useful at the base of an appendage in order to reallocate squash and stretch
         between axes based on the difference in rest pose orientations of the parent and child.
         It behaves closest to *Full* while suppressing shear.
 
-.. list-table:: Examples of transforming parented/connected bones with Inherit Rotation disabled.
+   .. list-table:: Examples of transforming parented/connected bones with Inherit Rotation disabled.
 
       * - .. figure:: /images/animation_armatures_bones_properties_relations_inherit-rot-disabled.png
 
@@ -216,3 +191,19 @@ which allows you to pose a whole chain just by moving its tip.
 
    This feature is somewhat extended/completed by
    the :doc:`pose library </animation/armatures/posing/editing/pose_library>`.
+
+
+.. _bpy.types.Bone.collections:
+.. _bpy.types.EditBone.collections:
+.. _bpy.types.PoseBone.collections:
+
+Bone Collections
+================
+
+This list shows the :term:`bone collections <Bone Collection>` the bone is
+assigned to. Press the eye icon to show or hide the entire bone collection.
+Press the X icon to remove the bone from that particular collection.
+
+To assign the bone to other bone collections, either use the :kbd:`M` or :kbd:`Shift-M` shortcuts
+(see :ref:`Moving Bones Between Collections <moving_bones_between_collections>`)
+or go to the :ref:`Armature properties panel <bpy.types.BoneCollection>`.

manual/animation/armatures/bones/selecting.rst

@@ -216,10 +216,10 @@ Prefix
    Select bones with matching name prefix (separated by ``.``).
 Suffix
    Select bones with matching name suffix (separated by ``.``).
-Layer
-   Select bones on the same layer.
-Group
-   Select bones in the same group.
+Bone Collection
+   Select bones that share one or more bone collections with the active bone.
+Color
+   Select bones that have the same color as the active bone.
 Shape
    Select bones using the same shape object (in Pose Mode).
 

manual/animation/armatures/introduction.rst

@@ -27,7 +27,7 @@ Open a default scene, then:
 #. Make sure the cursor is in the world origin with :kbd:`Shift-C`.
 #. Press :kbd:`Numpad1` to see the world in Front view.
 #. Add a *Single Bone* (:menuselection:`Add --> Armature`).
-#. Press :kbd:`NumpadDelete` to see the armature at maximum zoom.
+#. Press :kbd:`NumpadPeriod` to see the armature at maximum zoom.
 
 .. figure:: /images/animation_armatures_introduction_default.png
 

manual/animation/armatures/posing/introduction.rst

@@ -44,5 +44,5 @@ There are six different color codes, ordered here by precedence
 
 .. note::
 
-   When :doc:`/animation/armatures/properties/bone_groups` colors are enabled,
+   When :ref:`bone colors <bpy.types.BoneColor>` are enabled,
    the state colors will be overridden.

manual/animation/armatures/posing/selecting.rst

@@ -127,14 +127,12 @@ Grouped
    :Menu:      :menuselection:`Select --> Grouped`
    :Shortcut:  :kbd:`Shift-G`
 
-You can select bones based on their group and/or layer, through the *Select Grouped* pop-up menu :kbd:`Shift-G`:
+You can select bones, based on various properties, through the *Select Grouped* pop-up menu :kbd:`Shift-G`:
 
-Layer
-   To select all bones belonging to the same layer(s) as the selected ones,
-   use the *In Same Layer* entry.
-Group
-   To select all bones belonging to the same group(s) as the selected ones,
-   use the *In Same Group* entry.
+Collection
+   Selects all bones that are share at least one bone collection with the active bone.
+Color
+   Selects all bones that have the same color as the active bone.
 Keying Set
    ToDo.
 

manual/animation/armatures/properties/bone_collections.rst

@@ -0,0 +1,120 @@
+.. _bpy.types.BoneCollection:
+
+****************
+Bone Collections
+****************
+
+.. note::
+
+   Bone Collections were introduced in Blender 4.0 as replacement of Armature
+   Layers and Bone Groups. :ref:`Bone colors <bpy.types.Bone.color>` are now
+   managed directly on the bone.
+
+.. reference::
+
+   :Mode:      Pose & Armature Edit Modes
+   :Panel:     :menuselection:`Properties --> Armature --> Bone Collections`
+   :Menu:      :menuselection:`Pose --> Bone Collections --> ...`
+
+.. figure:: /images/animation_armatures_properties_bonecollections_panel.png
+
+   The Bone Collections panel in the Armature properties.
+
+This panel contains the Bone Collection :ref:`List view <ui-list-view>`, which
+allows the creation, deletion, and editing of Bone Collections.
+
+.. tip::
+
+   The Bone Properties panel gives a slightly different view on the bone's collections. See
+   :doc:`Bone Relations </animation/armatures/bones/properties/relations>`.
+
+
+Specials
+========
+
+.. _bpy.ops.armature.collection_solo_visibility:
+
+Solo Visibility
+   Hide all other bone collections except the active one.
+
+Show All
+   Unhides any hidden bone collections.
+
+
+Assign & Select
+===============
+
+.. _bpy.ops.armature.collection_assign:
+
+Assign
+   Assigns the selected bones to the active bone collection.
+
+.. _bpy.ops.armature.collection_unassign:
+
+Remove
+   Removes the selected bones from the active bone collection.
+
+.. _bpy.ops.armature.collection_select:
+
+Select
+   Selects the bones in the active bone collection.
+
+.. _bpy.ops.armature.collection_deselect:
+
+Deselect
+   Deselects the bones in the active bone collection.
+
+.. note::
+
+   Individual bones can als be unassigned from their collections via the
+   :ref:`Bone Relations panel <bpy.types.PoseBone.collections>`.
+
+.. tip::
+
+   For setting up custom selection sets of bones, take a look at the *Selection
+   Sets* add-on. It is bundled with Blender.
+
+
+.. _moving_bones_between_collections:
+
+Moving Bones between Collections
+================================
+
+Blender should be in *Edit Mode* or *Pose Mode* to move bones between collections.
+Note that as with objects, bones can be assigned to in several collections at once.
+
+.. _bpy.ops.armature.move_to_collection:
+
+Move to Bone Collection
+   Shows a list of the Armature's *editable* bone collections. Choosing a bone
+   collection unassign the selected bones from all other bone collections, then
+   assigns them to the chosen one.
+
+   Available as :menuselection:`Pose --> Move to Collection` (*Pose Mode*)
+   :menuselection:`Armature --> Move to Collection` (*Edit Mode*), and :kbd:`M` (either mode).
+
+Bone Collections
+   Shows a list of the Armature's *editable* bone collections. The collections
+   that the active bone is assigned to are prefixed with a `-`, and choosing
+   those will unassign all selected bones from that collection. Similarly,
+   choosing a bone collection prefixed with a `+` will assign all selected bones
+   to that collection.
+
+   Available as :menuselection:`Pose --> Bone Collections` (*Pose Mode*)
+   :menuselection:`Armature --> Bone Collections` (*Edit Mode*), and :kbd:`Shift+M` (either mode).
+
+.. note::
+
+   The above operators will only show the *editable* bone collections. When the
+   Armature is linked, its bone collections will be *read-only*. New bone
+   collections can still be added via library overrides; only those will be
+   editable.
+
+   See :ref:`Library Overrides of Bone Collections <bone_collections_library_overrides>`.
+
+
+Custom Properties
+=================
+
+Create and manage your own properties to store data in the Bone Collection's data-block.
+See the :ref:`Custom Properties <files-data_blocks-custom-properties>` page for more information.

manual/animation/armatures/properties/bone_groups.rst

@@ -1,84 +0,0 @@
-.. _bpy.types.BoneGroups:
-
-***********
-Bone Groups
-***********
-
-.. reference::
-
-   :Mode:      Pose Mode
-   :Panel:     :menuselection:`Properties --> Armature --> Bone Groups`
-   :Menu:      :menuselection:`Pose --> Bone Groups --> ...`
-
-.. TODO2.8
-   .. figure:: /images/animation_armatures_properties_bone-groups_panel.png
-
-      The Bone Groups panel.
-
-This panel allows the creation, deletion and editing of Bone Groups.
-Bone Groups can be used for selection or to assign a color theme to a set of bones.
-In example to color the left parts of the rig as blue and right parts as red.
-
-Active Bone Group
-   The Bone Group :ref:`List view <ui-list-view>`.
-
-   Color Set
-      A select menu.
-
-      :Default Colors: The default (gray) colors.
-      :*nn* - Theme Color Set: One of the twenty Blender presets by the theme.
-      :Custom Set: A custom set of colors, which is specific to each group.
-
-
-Custom Colors
-=============
-
-You can assign a "color theme" to a group (each bone will have these colors).
-Remember you have to enable the *Colors* checkbox (*Display* panel) to see these colors.
-
-.. _bpy.types.ThemeBoneColorSet:
-
-Regular
-   The first color field is the color of unselected bones.
-Select
-   The second color field is the outline color of selected bones.
-Active
-   The third color field is the outline color of the active bone.
-
-As soon as you alter one of the colors, it is switched to the *Custom Set* option.
-
-
-Assign & Select
-===============
-
-In the 3D Viewport, using the :menuselection:`Pose --> Bone Groups` menu entries,
-and/or the *Bone Groups* pop-up menu :kbd:`Ctrl-G`, you can:
-
-.. _bpy.ops.pose.group_assign:
-
-Assign
-   Assigns the selected bones to the active bone group.
-   It is important to note that a bone can only belong to one group.
-
-.. _bpy.ops.pose.group_unassign:
-
-Remove
-   Removes the selected bones from the active bone group.
-
-.. _bpy.ops.pose.group_select:
-
-Select
-   Selects the bones in the active bone group.
-
-.. _bpy.ops.pose.group_deselect:
-
-Deselect
-   Deselects the bones in the active bone group.
-
-.. note::
-
-   A single bone can be assigned to a group in the :ref:`Relations panel <bpy.types.PoseBone.bone_group>`.
-
-.. tip::
-
-   Bones belonging to multiple groups is possible with the *Selection Sets* add-on.

manual/animation/armatures/properties/display.rst

@@ -109,9 +109,9 @@ Show
       When enabled, the default standard bone shape is replaced,
       in *Object Mode* and *Pose Mode*, by the shape of a chosen object
       (see :doc:`Shaped Bones </animation/armatures/bones/properties/display>` for details).
-   Group Colors
-      Use the Bone Group colors to color the bone.
-      For more details see :doc:`Bone Groups </animation/armatures/properties/bone_groups>`.
+   Bone Colors
+      Draws bones in their configured colors. Disable to always draw bones in the default color.
+      For more details see :ref:`Bone Colors <bpy.types.Bone.color>`.
    In Front
       When enabled, the bones of the armature will always be shown on top of
       the solid objects (meshes, surfaces, ...). I.e. they will always be visible and selectable
@@ -128,3 +128,10 @@ Axis
    Position
       The position for the axes display on the bone.
       Increasing the value moves it closer to the tip; decreasing moves it closer to the root.
+
+.. _bpy.types.Armature.relation_line_position:
+
+Relations
+   Whether the :ref:`Relationship Lines <bpy.types.View3DOverlay.show_relationship_lines>`
+   overlay should be drawn from each parent's tail or head.
+   The lines are always drawn towards the childrens' heads.

manual/animation/armatures/properties/index.rst

@@ -7,6 +7,5 @@
    :maxdepth: 2
 
    introduction.rst
-   skeleton.rst
+   bone_collections.rst
    display.rst
-   bone_groups.rst

manual/animation/armatures/properties/introduction.rst

@@ -5,11 +5,34 @@ Introduction
 
 The *Armature* tab in Properties contains various panels gathering the armature settings.
 
-.. TODO2.8
-   .. figure:: /images/animation_armatures_properties_introduction_properties-editor.png
+.. figure:: /images/animation_armatures_properties_introduction_properties-editor.png
 
    The Armature tab in the Properties.
 
+Pose
+====
+
+.. reference::
+
+   :Mode:      All Modes
+   :Panel:     :menuselection:`Armature --> Pose`
+
+.. _bpy.types.Armature.pose_position:
+
+Pose Position
+   A radio button to switch between Pose Position and Rest Position.
+
+   In *Edit Mode*, you always see armatures in their rest position,
+   in *Object Mode* and *Pose Mode*, by default, you see them in *Pose Position*
+   (i.e. as it was transformed in the *Pose Mode*).
+   If you want to see it in the rest position in all modes, select *Rest Position*.
+
+
+Bone Collections
+================
+
+See :doc:`Bone Collections </animation/armatures/properties/bone_collections>`.
+
 
 Motion Paths
 ============

manual/animation/armatures/properties/skeleton.rst

@@ -1,45 +0,0 @@
-
-********
-Skeleton
-********
-
-.. reference::
-
-   :Mode:      All Modes
-   :Panel:     :menuselection:`Armature --> Skeleton`
-
-.. figure:: /images/animation_armatures_properties_skeleton_panel.png
-
-   Skeleton panel.
-
-In this panel you can arrange sets of bones into different layers for easier manipulation.
-
-.. _bpy.types.Armature.pose_position:
-
-Pose Position
-   A radio button to switch between Pose Position and Rest Position.
-
-   In *Edit Mode*, you always see armatures in their rest position,
-   in *Object Mode* and *Pose Mode*, by default, you see them in *Pose Position*
-   (i.e. as it was transformed in the *Pose Mode*).
-   If you want to see it in the rest position in all modes, select *Rest Position*.
-
-.. _bpy.types.Armature.layers:
-
-Armature Layers
-   Each armature has 32 layers to organize armatures by "regrouping" them into sets of bones.
-   Only bones in active layers will be visible/editable, but they will always be effective
-   (i.e. move objects or deform geometry), whether in an active layer or not.
-   This property changes which layers are visible in the 3D Viewport.
-   To show several layers at once, :kbd:`Shift-LMB` on the desired layers to view.
-   To move bones to a given layer, use :ref:`bpy.ops.armature.bone_layers`.
-
-.. _bpy.types.Armature.layers_protected:
-
-Protected Layers
-   You can lock a given bone layer for all :doc:`/files/linked_libraries/library_proxies`
-   of your armature, i.e. all bones in this layer will not be editable.
-
-   .. note::
-
-      *Protected Layers* in proxy are restored to proxy settings on file reload and undo.

manual/compositing/index.rst

@@ -24,11 +24,43 @@ Node Types
 
    types/input/index.rst
    types/output/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
    types/color/index.rst
-   types/converter/index.rst
    types/filter/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   types/keying/index.rst
+   types/mask/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   types/tracking/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   types/transform/index.rst
+   types/utilities/index.rst
    types/vector/index.rst
-   types/matte/index.rst
-   types/distort/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
    types/groups.rst
    types/layout/index.rst

manual/compositing/realtime_compositor.rst

@@ -1,10 +1,10 @@
 .. _realtime-compositor:
 
-*******************
-Realtime Compositor
-*******************
+**************
+GPU Compositor
+**************
 
-The Realtime Compositor is a new GPU accelerated compositor introduced in Blender 3.5 and is
+The new GPU accelerated compositor introduced in Blender 3.5 and is
 currently used for :ref:`viewport compositing <viewport-compositing>`. This compositor is currently
 more limited and not all :ref:`Compositor Nodes <compositor-nodes>` are supported, such nodes are
 marked with the :guilabel:`CPU Compositor Only` label along with notes about other limitations.
@@ -319,7 +319,7 @@ pixel space of the input.
 Output
 ======
 
-The realtime compositor only supports a single active output target, that is, only one of the
+The GPU compositor only supports a single active output target, that is, only one of the
 :ref:`Composite nodes <bpy.types.CompositorNodeComposite>`, :ref:`Viewer nodes
 <bpy.types.CompositorNodeViewer>`, or :ref:`Split Viewer nodes
 <bpy.types.CompositorNodeSplitViewer>` in the node tree will be considered active and the rest will

manual/compositing/types/color/adjust/index.rst

@@ -0,0 +1,17 @@
+
+##########
+  Adjust
+##########
+
+.. toctree::
+   :maxdepth: 1
+
+   bright_contrast.rst
+   color_balance.rst
+   color_correction.rst
+   exposure.rst
+   gamma.rst
+   hue_correct.rst
+   hue_saturation.rst
+   rgb_curves.rst
+   tone_map.rst

manual/compositing/types/color/adjust/rgb_curves.rst

@@ -84,7 +84,7 @@ In this example, the image has too much red in it,
 so we run it through an *RGB Curves* node and reduce the Red channel.
 
 Also, read on for examples of the Darken and Contrast Enhancement curves,
-:doc:`here </compositing/types/color/mix>`.
+:doc:`here </compositing/types/color/mix/mix_color>`.
 
 
 Color Correction using Black/White Levels

manual/compositing/types/color/index.rst

@@ -10,17 +10,29 @@ overlaying another image, etc.
 .. toctree::
    :maxdepth: 1
 
-   alpha_over.rst
-   bright_contrast.rst
-   color_balance.rst
-   color_correction.rst
-   exposure.rst
-   gamma.rst
-   hue_correct.rst
-   hue_saturation.rst
+   adjust/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   mix/index.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   alpha_convert.rst
+   color_ramp.rst
+   convert_colorspace.rst
+   set_alpha.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
    invert_color.rst
-   mix.rst
-   posterize.rst
-   rgb_curves.rst
-   tone_map.rst
-   z_combine.rst
+   rgb_to_bw.rst

manual/compositing/types/color/mix/index.rst

@@ -0,0 +1,25 @@
+
+#######
+  Mix
+#######
+
+.. toctree::
+   :maxdepth: 1
+
+   alpha_over.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   combine_color.rst
+   separate_color.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   mix_color.rst
+   z_combine.rst

manual/compositing/types/color/mix/mix_color.rst

@@ -1,7 +1,7 @@
 .. index:: Compositor Nodes; Mix
 .. _bpy.types.CompositorNodeMixRGB:
 .. Editor's Note: This page gets copied into:
-.. - :doc:`</render/cycles/nodes/types/color/mix>`
+.. - :doc:`</render/shader_nodes/color/mix>`
 .. - :doc:`</modeling/geometry_nodes/utilities/color/mix_rgb>`
 .. - :doc:`</render/shader_nodes/converter/mix>`
 .. - :doc:`</modeling/geometry_nodes/utilities/mix>`

manual/compositing/types/color/set_alpha.rst

@@ -70,7 +70,7 @@ The node tree below shows how to do this using the Set Alpha node.
    Fade to black.
 
 In the example above, the alpha channel of the swirl image is ignored.
-Instead, a :doc:`Time Curve node </compositing/types/input/time_curve>`
+Instead, a :doc:`Time Curve node </compositing/types/input/scene/time_curve>`
 introduces a factor from 0.0 to 1.0 over 60 frames, or about 2 seconds,
 to the Set Alpha node. Note that the time curve is exponentially-shaped,
 so that the overall blackness will fade in slowly and then accelerate toward the end.

manual/compositing/types/converter/index.rst

@@ -1,28 +0,0 @@
-
-###################
-  Converter Nodes
-###################
-
-As the name implies, these nodes convert the colors or other properties of various data
-(e.g. transparency) in some way.
-
-They also split out or re-combine the different color channels that make up an image,
-allowing you to work on each channel independently.
-Various color channel arrangements are supported, including traditional RGB, HSV
-and :abbr:`HDMI (High Definition Media Interface)` formats.
-
-.. toctree::
-   :maxdepth: 1
-
-   alpha_convert.rst
-   color_space.rst
-   color_ramp.rst
-   combine_color.rst
-   combine_xyz.rst
-   id_mask.rst
-   math.rst
-   rgb_to_bw.rst
-   separate_color.rst
-   separate_xyz.rst
-   set_alpha.rst
-   switch_view.rst

manual/compositing/types/filter/blur/bokeh_blur.rst

@@ -30,7 +30,7 @@ Size
    controlled by an input image. In order to use the latter, the Variable Size option must be selected.
    See the examples section below for more on how to use this.
 Bounding Box
-   This can be used with a :doc:`Box Mask </compositing/types/matte/box_mask>`
+   This can be used with a :doc:`Box Mask </compositing/types/mask/box_mask>`
    matte node or with a :doc:`Mask </compositing/types/input/mask>`
    input node to restrict the area of the image the blur is applied to. This could be helpful, for example,
    when developing a node system by allowing only a small area of the image to be filtered
@@ -59,14 +59,14 @@ Examples
 
 Three examples of how the size input may be used follow.
 
-An :doc:`ID masked </compositing/types/converter/id_mask>`
+An :doc:`ID masked </compositing/types/mask/id_mask>`
 alpha image can be used so that a background is blurred while foreground objects remain in focus.
 To prevent strange edges the :doc:`Dilate Node </compositing/types/filter/dilate_erode>` should be used.
 
-The Z pass can be visualized using a :doc:`Map Value </compositing/types/vector/map_value>` node
-and a :doc:`Color Ramp </compositing/types/converter/color_ramp>` node
-as described in :doc:`Render Layers </compositing/types/input/render_layers>`.
-A *multiply* :doc:`Math </compositing/types/converter/math>` node can be used following the color ramp
+The Z pass can be visualized using a :doc:`Map Value </compositing/types/utilities/map_value>` node
+and a :doc:`Color Ramp </compositing/types/color/color_ramp>` node
+as described in :doc:`Render Layers </compositing/types/input/scene/render_layers>`.
+A *multiply* :doc:`Math </compositing/types/utilities/math>` node can be used following the color ramp
 so that a blur value greater than one is used for objects outside the focal range.
 
 .. figure:: /images/compositing_types_filter_bokeh-blur_example-1.png

manual/compositing/types/filter/blur/index.rst

@@ -0,0 +1,14 @@
+
+#####################
+  Blur Filter Nodes
+#####################
+
+.. toctree::
+   :maxdepth: 1
+
+   bilateral_blur.rst
+   blur.rst
+   bokeh_blur.rst
+   defocus.rst
+   directional_blur.rst
+   vector_blur.rst

manual/compositing/types/filter/index.rst

@@ -6,21 +6,36 @@
 Filters process the pixels of an image to highlight additional details or perform some sort of
 post-processing effect on the image.
 
+.. toctree::
+   :maxdepth: 1
+
+   blur/index.rst
+
+----------
+
 .. toctree::
    :maxdepth: 1
 
    anti_aliasing.rst
-   bilateral_blur.rst
-   blur_node.rst
-   bokeh_blur.rst
-   defocus.rst
    denoise.rst
    despeckle.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
    dilate_erode.rst
-   directional_blur.rst
-   filter_node.rst
-   glare.rst
    inpaint.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   filter.rst
+   glare.rst
+   kuwahara.rst
    pixelate.rst
+   posterize.rst
    sun_beams.rst
-   vector_blur.rst

manual/compositing/types/filter/inpaint.rst

@@ -9,8 +9,6 @@ Inpaint Node
    :align: right
    :alt: Inpaint Node.
 
-:guilabel:`CPU Compositor Only`
-
 The *Inpaint node* is used to extend borders of an image into transparent or masked regions.
 This can be useful to solve problems like "wire removal" and holes created during chroma keying.
 

manual/compositing/types/filter/kuwahara.rst

@@ -0,0 +1,149 @@
+.. index:: Compositor Nodes; Kuwahara
+.. _bpy.types.CompositorNodeKuwahara:
+
+*************
+Kuwahara Node
+*************
+
+.. figure:: /images/compositing_node-types_CompositorNodeKuwahara.webp
+   :align: right
+   :alt: Kuwahara Node.
+
+The Kuwahara node implements the Kuwahara filter as well as its anisotropic
+variant. The Kuwahara filter is a smoothing filter that tries to preserve the
+edges in the image. The smoothing effect of the anisotropic variant is similar
+to brush strokes, so the node can be used to create stylized painting effects.
+
+
+Inputs
+======
+
+Image
+   Standard color input.
+
+
+Properties
+==========
+
+Type
+   :Classic: A simple smoothing method that averages the local square
+      neighbourhood of the image while preserving edges. Produces blocky results
+      due to the square neighbourhood and provides no tuning parameters, but is
+      faster to compute.
+   :Anisotropic: A complex smoothing method that averages the local
+      neighbourhood of the image in the direction of the flow of the edges,
+      thus preserving the edges in the output. Produces painterly-like results
+      and provides multiple turning parameters, while being slower to compute.
+
+Size
+   Controls the size of the smoothing neighbourhood. Large values may introduce
+   artifacts for highly detailed areas. For the anisotropic method, the larger
+   the size, the slower the filter.
+
+   .. list-table::
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_original.webp
+
+             Original.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_size3.webp
+
+             Size: 3.
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_size6.webp
+
+             Size: 6.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_size9.webp
+
+             Size: 9.
+
+Uniformity
+   Controls the uniformity of the directions of the edges of the image. Non
+   uniform directions are nearly never desirable, so this should typically be
+   increased until the user notices the result is no longer changing in a
+   significant way. Further increases would produces worst results and increase
+   compute time.
+
+Sharpness
+   Controls the sharpness of the edges of the image.
+
+   .. list-table::
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_original.webp
+
+             Original.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_sharpness0.webp
+
+             Sharpness: 0.
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_sharpness05.webp
+
+             Sharpness: 0.5.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_sharpness1.webp
+
+             Sharpness: 1.
+
+Eccentricity
+   Controls how thin and directional the filter is. Low eccentricity corresponds
+   to circular omnidirectional features while high eccentricity corresponds to
+   thin directional features.
+
+   .. list-table::
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_original.webp
+
+             Original.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_eccentricity0.webp
+
+             Eccentricity: 0.
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_eccentricity1.webp
+
+             Eccentricity: 1.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_eccentricity2.webp
+
+             Eccentricity: 2.
+
+
+Outputs
+=======
+
+Image
+   Standard color output.
+
+
+Notes
+=====
+
+Iterations
+   The filter can be applied multiple times by chaining the node multiple times.
+   This chaining can produce more flat filtering.
+
+   .. list-table::
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_original.webp
+
+             Original.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_iterations1.webp
+
+             Iterations: 1.
+
+      * - .. figure:: /images/compositing_types_filter_kuwahara-node_iterations2.webp
+
+             Iterations: 2.
+
+        - .. figure:: /images/compositing_types_filter_kuwahara-node_iterations3.webp
+
+             Iterations: 3.
+
+Performance
+   The filter can be expensive to compute for high size input and high resolution
+   images. To improve performance, consider scaling down the image, applying the
+   filter, then scaling it up again. This can work well because the filter
+   already attenuates low frequency details.

manual/compositing/types/filter/pixelate.rst

@@ -9,7 +9,7 @@ Pixelate Node
    :align: right
    :alt: Pixelate Node.
 
-Add this node in front of a :doc:`Scale node </compositing/types/distort/scale>`
+Add this node in front of a :doc:`Scale node </compositing/types/transform/scale>`
 to get a pixelated (non-smoothed) image from the resultant upscaled image.
 
 

manual/compositing/types/input/bokeh_image.rst

@@ -10,7 +10,7 @@ Bokeh Image Node
    :alt: Bokeh Image Node.
 
 The *Bokeh Image* node generates a special input image for use with
-the :doc:`Bokeh Blur </compositing/types/filter/bokeh_blur>` filter node.
+the :doc:`Bokeh Blur </compositing/types/filter/blur/bokeh_blur>` filter node.
 
 The *Bokeh Image* node is designed to create a reference image which simulates optical parameters
 such as aperture shape and lens distortions which have important impacts on bokeh in real cameras.
@@ -52,7 +52,7 @@ Example
 =======
 
 In the example below the *Bokeh Image* is used to define the shape of the bokeh for
-the :doc:`Bokeh Blur </compositing/types/filter/bokeh_blur>` node.
+the :doc:`Bokeh Blur </compositing/types/filter/blur/bokeh_blur>` node.
 
 .. figure:: /images/compositing_types_filter_bokeh-blur_example-1.png
    :width: 640px

manual/compositing/types/input/constant/index.rst

@@ -0,0 +1,11 @@
+
+
+############
+  Constant
+############
+
+.. toctree::
+   :maxdepth: 1
+
+   rgb.rst
+   value.rst

manual/compositing/types/input/constant/value.rst

@@ -48,4 +48,4 @@ this makes the node a useful organizational tool.
 .. tip::
 
    From this you can also make different values proportional to each other by adding
-   a :doc:`Math Node </compositing/types/converter/math>` in between the different links.
+   a :doc:`Math Node </compositing/types/utilities/math>` in between the different links.

manual/compositing/types/input/index.rst

@@ -15,6 +15,13 @@ For instance, an input can be:
 These nodes generate the information that is passed to other nodes.
 As such, they have no input sockets; only outputs.
 
+.. toctree::
+   :maxdepth: 1
+
+   constant/index.rst
+
+----------
+
 .. toctree::
    :maxdepth: 1
 
@@ -22,10 +29,11 @@ As such, they have no input sockets; only outputs.
    image.rst
    mask.rst
    movie_clip.rst
-   render_layers.rst
-   rgb.rst
-   scene_time.rst
    texture.rst
-   time_curve.rst
-   track_position.rst
-   value.rst
+
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   scene/index.rst

manual/compositing/types/input/scene/index.rst

@@ -0,0 +1,12 @@
+
+
+#########
+  Scene
+#########
+
+.. toctree::
+   :maxdepth: 1
+
+   render_layers.rst
+   scene_time.rst
+   time_curve.rst

manual/compositing/types/input/scene/time_curve.rst

@@ -48,7 +48,7 @@ Factor
 
 .. hint:: Output values
 
-   The :doc:`Map Value </compositing/types/vector/map_value>`
+   The :doc:`Map Value </compositing/types/utilities/map_value>`
    node can be used to map the output to a more appropriate value.
    With sometimes curves, it is possible that the Time Curve node
    may output a number larger than one or less than zero.

manual/compositing/types/keying/index.rst

@@ -1,7 +1,7 @@
 
-###############
-  Matte Nodes
-###############
+################
+  Keying Nodes
+################
 
 These nodes give you the essential tools for creating a :term:`Matte` for images
 that do not already have their own :term:`Alpha Channel`.
@@ -18,7 +18,7 @@ Taking out too much green can result in foreground actors looking flat or bluish
 You can and should chain these nodes together,
 improving your masking and color correction in successive refinements,
 using each node's strengths to operate on the previous node's output.
-:doc:`Keying Node </compositing/types/matte/keying>` is the closest to a "does-it-all" node
+:doc:`Keying Node </compositing/types/keying/keying>` is the closest to a "does-it-all" node
 for green screens, but the best results stem from a combination of techniques.
 
 .. note::
@@ -34,26 +34,21 @@ for green screens, but the best results stem from a combination of techniques.
    by the node.
 
    Simple garbage mattes can be created with
-   the :doc:`Box Mask </compositing/types/matte/box_mask>` or
-   the :doc:`Ellipse Mask </compositing/types/matte/ellipse_mask>`.
+   the :doc:`Box Mask </compositing/types/mask/box_mask>` or
+   the :doc:`Ellipse Mask </compositing/types/mask/ellipse_mask>`.
    More complicated matte shapes using
-   a :doc:`Double Edge Mask </compositing/types/matte/double_edge_mask>` or
+   a :doc:`Double Edge Mask </compositing/types/mask/double_edge_mask>` or
    using a :doc:`Mask </compositing/types/input/mask>`.
 
 .. toctree::
    :maxdepth: 1
 
-   box_mask.rst
    channel_key.rst
    chroma_key.rst
    color_key.rst
    color_spill.rst
-   cryptomatte.rst
-   cryptomatte_legacy.rst
    difference_key.rst
    distance_key.rst
-   double_edge_mask.rst
-   ellipse_mask.rst
    keying.rst
    keying_screen.rst
    luminance_key.rst

manual/compositing/types/keying/keying.rst

@@ -22,7 +22,7 @@ Image
 Key Color
    The color of content to be removed. This may be a single color,
    or a reference image such as generated by
-   the :doc:`Keying Screen Node </compositing/types/matte/keying_screen>`.
+   the :doc:`Keying Screen Node </compositing/types/keying/keying_screen>`.
 Garbage Matte
    An optional mask of area(s) to always *exclude* from the output.
    This is removed from the chroma key generated matte.
@@ -48,12 +48,12 @@ Despill Factor
    Controls how much color bleed from the key color is removed from the input
    image: 0 means no despilling, 1 means all possible spilling will be removed.
    The underlying implementation is the same as adjusting the *Unspill* amount
-   of the :doc:`Color Spill Node </compositing/types/matte/color_spill>`.
+   of the :doc:`Color Spill Node </compositing/types/keying/color_spill>`.
 Despill Balance
    This controls how the color channels are compared when computing spill,
    affecting the hue and shade of the corrected colors.
    It is similar to setting the *Limiting Channel*
-   in the :doc:`Color Spill Node </compositing/types/matte/color_spill>`.
+   in the :doc:`Color Spill Node </compositing/types/keying/color_spill>`.
 Edge Kernel Radius
    Defines the radius in pixel used to detect an edge.
 Edge Kernel Tolerance
@@ -63,7 +63,7 @@ Edge Kernel Tolerance
 Clip Black
    This sets the threshold for what becomes fully transparent in the output (black in the matte).
    It should be set as low as possible. Uneven backdrops will require this value to be increased.
-   Use of the :doc:`Keying Screen Node </compositing/types/matte/keying_screen>` can help
+   Use of the :doc:`Keying Screen Node </compositing/types/keying/keying_screen>` can help
    keep this value low. You may also use a *Garbage Matte* to exclude problematic areas.
 
    This value does not impact areas detected as edges to ensure edge detail is preserved.
@@ -94,8 +94,8 @@ Image
    Processed image with the *Matte* applied to the images' :term:`Alpha Channel`.
 Matte
    Output matte to use for checking the quality of the key, or to manually apply
-   using a :doc:`Set Alpha Node </compositing/types/converter/set_alpha>` or
-   :doc:`Mix Node </compositing/types/color/mix>`.
+   using a :doc:`Set Alpha Node </compositing/types/color/set_alpha>` or
+   :doc:`Mix Node </compositing/types/color/mix/mix_color>`.
 Edges
    Shows what edges were detected on the matte.
    Useful for adjusting the *Edge Kernel Radius* and *Edge Kernel Tolerance*.

manual/compositing/types/keying/keying_screen.rst

@@ -49,7 +49,7 @@ Example
 =======
 
 Consider a node setup for green screen removal, using
-a :doc:`Color Key </compositing/types/matte/color_key>`:
+a :doc:`Color Key </compositing/types/keying/color_key>`:
 
 .. figure:: /images/compositing_types_matte_keying-screen_key-usage.png
    :width: 480px

manual/compositing/types/keying/luminance_key.rst

@@ -21,7 +21,7 @@ that aren't suitable for chroma keying.
 .. tip::
 
    When compositing footage of something that emits light and has a dark background,
-   like fire, a :doc:`Mix Node </compositing/types/color/mix>` using a *Screen* or
+   like fire, a :doc:`Mix Node </compositing/types/color/mix/mix_color>` using a *Screen* or
    *Add* operator will produce better results.
 
 

manual/compositing/types/layout/index.rst

@@ -1,5 +1,4 @@
 
-.. _composite-nodes-layout-index:
 
 ################
   Layout Nodes
@@ -7,7 +6,3 @@
 
 These are nodes which help you control the layout and connectivity of nodes within the Compositor.
 
-.. toctree::
-   :maxdepth: 1
-
-   switch.rst

manual/compositing/types/mask/box_mask.rst

@@ -61,4 +61,4 @@ Mask
 
 .. tip::
 
-   For soft edges, pass the output mask through a slight :doc:`Blur node </compositing/types/filter/blur_node>`.
+   For soft edges, pass the output mask through a slight :doc:`Blur node </compositing/types/filter/blur/blur>`.

manual/compositing/types/mask/cryptomatte.rst

@@ -12,7 +12,7 @@ Cryptomatte Node
 :guilabel:`CPU Compositor Only`
 
 The Cryptomatte node uses the Cryptomatte standard to efficiently create mattes for compositing.
-Cycles and Eevee output the required render passes, which can then be used in the Compositor
+Cycles and EEVEE output the required render passes, which can then be used in the Compositor
 or another compositor with Cryptomatte support to create masks for specified objects.
 
 Unlike the Material and Object Index passes, the objects to isolate are selected in compositing,