[no subject]

[JONL at MIT-MC (Jon L White)]

How do you find out if a random S-expression array has the 
GC-MARK property?  ARRAYDIMS only tells you that it is an 
S-expression array.  thus
(EQUAL (ARRAYDIMS (ARRAY A T n1 n2)) (ARRAYDIMS (ARRAY B NIL n1 n2)))
is true.  Foo.