Some in the audience are vexed at the $26 billion package of aid for teaching and other jobs that Mr Driehaus and his colleagues in the House recently passed.

Based on the commercial package Macsyma, Maxima includes a complete ALGOL-like programming language and is most useful for teaching programming concepts in computer algebra.

While teaching a course in computer graphics, the author has developed a software package-The North China University of Technology Graphics System(NGS).