ppmtoleaf - convert PPM image to Interleaf image format
This program is part of Netpbm(1).
ppmtoleaf reads an Interleaf image file as input and generates a PPM image as output.
Interleaf is a now-defunct (actually purchased ca. 2000 by BroadVision) technical publishing software company.
The program is copyright (C) 1994 by Bill O'Donnell.