Gdtclft

TCL interface to the Thomas Boutell’s Gd library

Spencer Thomas said about the original TCL GD

Thomas  Boutell's Gd  package  provides a  convenient way  to
generate PNG images with a C program. If you, like me, prefer
Tcl for CGI applications, you'll want my TCL GD extension.

The software is now maintained by John Ellson ellson@lucent.com, it seems.

WWW http//graphviz.org/cgi-bin/man?gdtclft