Acknowledgments
Author of the Tcl Interface - TSIPP
Mark Diekhans <markd@Kermodei.com>
Authors of SIPP
The SIPP 3D rendering package was developed by Jonas Yngvesson <jonas-y@isy.liu.se>
and Inge Wallin <ingwa@isy.liu.se> of the Linkoping Institute of Technology,
Sweden.
Authors of URT
The Utah Raster Toolkit RLE library was developed by Spencer W. Thomas
and others.