length of external names

[Mike Schloss]

> >...personally, i would like to see variable names restricted to 3 chars
> >exactly :-)
> 
> Or better yet, a single upper-case character, ('I' preferred) followed by
> exactly four digits! ::-)
> -- 
> :::::: Jan Steinman		Box 1000, MS 61-161	(w)503/685-2843 ::::::
> :::::: tektronix!tekecs!jans	Wilsonville, OR 97070	(h)503/657-7703 ::::::

Or how about a single upper-case character only for numbers and
a '$' followed by a single upper-case character only for characters?