[Boa Constr] Another one

[DU <des...@gm...>]

(Checked Bugs.txt this time, I don't see this one in there.)

I'm using a wxTreeCtrl.  The child items indent a lot farther than I
want.  (The third leve down is already halfway across the control and
I'm not even to the real data yet.)  I see a property called "Indent"
that is set to 15, but Boa isn't saving my changes to that, nor is it
creating code to set that property.

Is that the right property?  Should I set it manually in some cleanup function?