Here is a list of all documented files with brief descriptions:

[detail level 1234567]

data
include
gdk
graphics
ext
animation
animation_types.h
bvh.h
ik.h
profile.h
retarget.h
skeleton.h
skinning.h
aseprite.h
font.h
gltf.h
png.h
sprite_animation.h
attribute_data.h
color.h
data_types.h
exception.h
model_data.h
string_keyed.h
texture_data.h	What the core takes: decoded channel data and the metadata describing it
impl
null
include
gdk
graphics
null_context.h
include
gdk
graphics
ext
batch_modeler.h
font_texture.h
text_modeler.h
utf8.h
camera.h
constraints.h
context.h
entity.h
limits.h
material.h
model.h
profile.h
scene.h
screen_camera.h
shader_program.h
texture.h
texture_camera.h
types.h