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[no subject]

MAKUNBOUND flushes the value cell.  This is dangerous (you may have a 
pointer to it on the stack), unnecessary (QUNBOUND can be used 
instead to make unbound), and goes against BIBOP LISP where all atoms 
are created with value cells.  MACSYMA certainly wants QUNBOUND to be 
stuck in instead, and if LISP is to provide the user with a MAKUNBOUND 
function and only one, surely this should be it.  If GLS and JONL do 
not object to this change, I believe HIC is willing to make it.