Resizing fields in Squeak?

[Mark Guzdial]

I can't seem to resize background fields in stacks in Squeak.  I've 
dropped two background fields in.  They WERE resizable (e.g., I could 
move around the yellow halo) when I first dropped them in and when I 
first entered some text in.  I'm not sure what I've done, but now I 
can't resize them.  I shift-select the background text field, the 
halos pop up, but I can't move the yellow halo.  Suggestions?

Thanks!
  Mark
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Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280
Associate Professor - Learning Sciences & Technologies.
Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/
(404) 894-5618 : Fax (404) 894-0673 : guzdial at cc.gatech.edu
http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html