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

lib
core
include
internal
AVL.h	This file contains the namespace pm::AVL
dense_linalg.h	Linear Algebra algorithms for dense vector and matrix types
Array.h	Implementation of pm::Array class
color.h	Implementation of pm::RGB and pm::HSV classes
EquivalenceRelation.h	Implementation of polymake::EquivalenceRelation class
FaceMap.h	This file contains the namespace face_map
FacetList.h	Implementation of pm::FacetList and ... classes
GenericGraph.h	Implementation of pm::GenericGraph class
GenericMatrix.h
GenericSet.h	Declaration of pm::GenericSet class
GenericVector.h
Graph.h	Implementation of pm::graph::Graph class
IncidenceMatrix.h	Implementation of pm::IncidenceMatrix class
Integer.h	Implementation of pm::Integer class
ListMatrix.h	Implementation of pm::ListMatrix class
Map.h	Implementation of pm::Map class
Matrix.h	Implementation of pm::Matrix class
Rational.h	Implementation of pm::Rational class
Set.h	Implementation of pm::ApproximateSet class
SparseMatrix.h	Implementation of pm::SparseMatrix class
SparseVector.h	Implementation of pm::SparseVector class
TropicalNumber.h	Implementation of pm::TropicalNumber class
Vector.h	Implementation of pm::Vector class