Naturally the technical details of many of the subroutines could be improved. So could the presentations included in this user's manual. In any event, experience shows that programs grow, amongst other ways, by a process which includes proliferating minor variants of some theme untill their number has become unwieldy. At that time common features of their structure will be sought out, the new structure defined and assigned parameters. The original collection will then be consolidated, only to begin the process anew. GEOM has, and will continue to, follow such a course.