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

[detail level 12345]

packs
rigComponent
src
rig
create.h	Creators an artist calls to make entities - makeRect and friends
sketch.h	Retained-style sketch helpers - fill once, then spawn ECS shapes
CCurve.h	CCurve transfer-curve component with its preset, evaluation, and LUT helpers
CScreenCast.h	Screen-cast session POD and its protocol / payload / state enums
CUiPanel.h	Portable tool / HUD surfaces: CUiPanel, CUiGroup, CUiControl, CUiAction
EntityProperty.h	Reads and writes reflected entity properties by name
MeshEdge.h	Vertex-pair key naming one undirected edge of a mesh
MeshFaces.h	Reads, welds, and tessellates the authored n-gon faces of a CMesh
PathEllipticArc.h	Builds, flattens, splits, and transforms SVG elliptical arcs held as CPath::ArcTo
PrimitiveBounds.h	Axis-aligned bounds for whichever 2D primitive an entity carries
PrimitiveVertices.h	Expands the parametric 2D primitives into local-space vertex lists
PrimitiveVertices3D.h	Expands the parametric 3D primitives into local-space triangle vertices