Edges in Mesh - adds automatic when you use creases. For other situations; call the void make_edges(Mesh *me) in mesh.c. Of course, once in editmode the edges are automatically recreated. - in F9 buttons you can add/remove edges too - both for Mesh and DisplistMesh, so it speeds up drawing quite some in wireframe - render for edges can't work... edges have no material nor tface nor col.. so here still the faces are rendered in wire Creases in Subsurf - based on the code by Chris McFarlen - main changes is that now edges are used, saving quite some data in file - use SHIFT+E in editmode to set edges-sharpness. values go from 0-1 - in F9 buttons you can set draw-crease mode. It draws now blended from wire color to edge-select color (as provided in Theme) Known issue: setting sharpness on 1 cube (subdiv 2) gives weird results with some values... Chris, can you check? Further; code cleanups, changing 0 in NULL when needed, no warnings, etc etc