BRepTools.cxx implements Read and Write for .brp files; it also has a Dump method.

-uses a BRepTools_ShapeSet instance as a container for the objects, geometry and locations (?)

- BRepTools_ShapeSet uses method for Read, Write and Dump inherited from TopTools_ShapeSet

TopTools_ShapeSet contains:

TopTools_IndexedMapOfShape myShapes; -- cannot find implementation

TopTools_LocationSet myLocations;