GENSYM/GENTEMP

[Kent M. Pitman <KMP at MIT-MC>]

Please do not think of changing GENSYM, at least in Maclisp. There are
systems (eg, semantic network systems) where people use GENSYM just to make
things with property lists that do not print circularly. They never intend
these objects to be printed so don't care about the extra hair of GENTEMP
which would cost them precious address space to no advantage. I think
the concept of a GENSYM that can survive PRINT-READ is a good one to think 
about, but let's not mix up the two ideas. Even in this day and age, memory
conservation makes a difference.