Unit selection input

[Lars Clausen <lrclause cs uiuc edu>]

Here's a design choice I'd like some input on:  Should Unit selection be a
per-diagram option or a global option?  Any opinions for or against?

-Lars

-- 
Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| Hårdgrim of Numenor
"I do not agree with a word that you say, but I   |----------------------------
will defend to the death your right to say it."   | Where are we going, and
    --Evelyn Beatrice Hall paraphrasing Voltaire  | what's with the handbasket?