var parameters in T?

[Mike Caplinger <mike@rice.ARPA>]

Is there any way to cleanly do VAR parameters in T?  For example, I
might expect the function

(define foo (lambda (a) (set a 1)))

when invoked with

(lset c 0)
(foo (locative c))

to leave c with the value 1, but it doesn't.  Obviously I don't
understand what locatives are doing for me...

	- Mike