field as menu?

[Charles Hartman]

I know this is totally basic -- but I can't remember how to use a  
scrolling list field as an ersatz menu. I'm thinking of a long list,  
user selects one item, action to edit that item ensues. Pulldown and  
popup are ergonomically less suitable than a scrolling list (holding  
down a mouse-button is bad, bad). But a list is a field not a button  
and has no menu style . . . Somebody pity the poor confused & remind  
me what to do in this situation?

Charles Hartman