() as a lambda variable

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

Would it be possible for the next version of the interpreter
to permit constructs such as  "(LAMBDA (V1 V2 () V4) . . .)"  to be 
applicable;  thus one could explicitly show where he expects a lambda-
variable to be unused, without the compiler complaining.  This is in the
current COMPLR, but of course is of little value until the interpreter
will overlook () in the bound var list.