Blender kernel action and pose functionality.
little array macro library.
Blender util stuff.
BMesh modeler structure and functions.
BMesh modeler structure and functions - custom data.
CustomData interface, see also DNA_customdata_types.h.
support for deformation groups and hooks.
display list (or rather multi purpose list) stuff.
General operations, lookup, etc. for materials.
General operations, lookup, etc. for blender objects.
blender format spesific macros