The original help message of the package states that:
The polyhedron’s number (written and read with the %d printf/scanf format).
The polyhedron’s name is less than 128 characters long and is not capitalized.
The eqn(1) input for two symbols separated by a tab; the Johnson symbol, and the Schlafli symbol.
The name of the dual polyhedron optionally followed by a horizontal tab and the number of the dual.
The first line contains the number of vertices. The vertices are arranged one per line as an (x, y, z) coordinate of white-space separated values (described below). The vertices are implicitly numbered starting at zero.
The first line contains the number of faces and the maximum number of vertices in a face. The remaining lines are the faces in the planar net. Each face has a vertex count followed by the vertex numbers. The vertices are listed in counter-clockwise order as viewed from outside the polyhedron.
The first line contains the number of hinges in the planar net The remaining lines are hinge connections. The format is face1 side1 face2 side2 value. Sides are numbered from zero. If the dihedral (value) is greater than J, it is a reflex or re-entrant hinge. solid the first line contains the number of faces and the maximum number of vertices in a face. The remaining lines are the faces in the 3D polyhedron. Each face has a vertex count followed by the vertex numbers. The vertices are listed in counter-clockwise order as viewed from outside the polyhedron.
The first line contains the number of distinct dihedrals. Each dihedral starts on a new line and has a count and a value. If the count is non-zero, then that many face edge pairs (one per line) follow the dihedral value.