[from MacLISP for generated symbol]
1. v. To invent a new name for something temporary, in such a way
that the name is almost certainly not in conflict with one already in
use.
2. n. The resulting name. The canonical form of a gensym is `Gnnnn'
where nnnn represents a number; any LISP hacker would recognize G0093
(for example) as a gensym.
3. A freshly generated data structure with a gensymmed name.
Gensymmed names are useful for storing or uniquely identifying
crufties (see {cruft}).
[glossary]