optional args (again)

[Rick.Busdiecker@h.cs.cmu.edu]

I think I just sent out a message that I had just started putting
together.  Sorry.

Anyway, I understand why the required arguments must match, but not why
the optional arguments must match as well.  Will it be possible to
specify the class of optional arguments in the future?  Is it possible
now?  If it won't be possible, could someone give me an example of a
case where it causes problems to have differing numbers of optional
arguments for the same message?

			Rick