- documentation updates:

-- add Key module to index page
  -- include cross references for Object.colbits in material descriptions
     within Object, NMesh and Mesh modules

source/blender/python/api2_2x/doc/API_intro.py

@@ -23,6 +23,7 @@ The Blender Python API Reference
   - L{Effect}
   - L{Image}
   - L{Ipo}
+  - L{Key} (*)
   - L{Lamp}
   - L{Lattice}
   - L{Library}

source/blender/python/api2_2x/doc/Mesh.py

@@ -477,6 +477,9 @@ class Mesh:
 
   @ivar materials: The mesh's materials.  Each mesh can reference up to
     16 materials.  Empty slots in the mesh's list are represented by B{None}.
+    B{Note}: L{Object.colbits<Object.Object.colbits>} needs to be set correctly
+    for each object in order for these materials to be used instead of
+    the object's materials.
   @type materials: list of Materials
   @ivar degr: The max angle for auto smoothing in [1,80].  
   @type degr: int
@@ -589,7 +592,7 @@ class Mesh:
     @type edges: tuple(s) of ints or MVerts
     @param edges: can be tuples of MVerts or integer indexes (B{note:} will
        not work with PVerts) or a sequence (list or tuple) containing two or
-       tuples.
+       more tuples.
     @rtype: int, None or list
     @return: if an edge is found, its index is returned; otherwise None is
     returned.  If a sequence of edges is passed, a list is returned.

source/blender/python/api2_2x/doc/NMesh.py

@@ -447,6 +447,9 @@ class NMesh:
     @note: if a user goes to the material buttons window and removes some
         mesh's link to a material, that material slot becomes empty.
         Previously such materials were ignored.
+    @note: L{Object.colbits<Object.Object.colbits>} needs to be set correctly
+        for each object in order for these materials to be used instead of
+        the object's materials.
     """
 
   def setMaterials(matlist):
@@ -457,6 +460,9 @@ class NMesh:
     @type matlist: list of materials
     @param matlist: a list with materials, None's also accepted (they become
         empty material slots in Blender.
+    @note: L{Object.colbits<Object.Object.colbits>} needs to be set correctly
+        for each object in order for these materials to be used instead of
+        the object's materials.
     """
 
   def hasVertexColours(flag = None):

source/blender/python/api2_2x/doc/Object.py

@@ -175,6 +175,9 @@ class Object:
     @ivar colbits: The Material usage mask. A set bit #n means: the Material
         #n in the Object's material list is used. Otherwise, the Material #n
         of the Objects Data material list is displayed.
+        Example::
+            object.colbits = 0x21 # use mesh materials 0 (0x01) and 5 (0x20)
+                                  # use object materials for all others
     @ivar drawType: The object's drawing type used. 1 - Bounding box,
         2 - wire, 3 - Solid, 4- Shaded, 5 - Textured.
     @ivar drawMode: The object's drawing mode used. The value can be a sum
@@ -570,7 +573,8 @@ class Object:
 
   def setMaterials(materials):
     """
-    Sets the materials. The argument must be a list 16 items or less.  Each list element is either a Material or None.
+    Sets the materials. The argument must be a list 16 items or less.  Each
+    list element is either a Material or None.  Also see L{colbits}.
     @type materials: Materials list
     @param materials: A list of Blender material objects.
     """