Hi, Ross,

See:

http://groups.yahoo.com/group/squeak/message/20502

or, for a more recent mention of this topic,

http://groups.yahoo.com/group/squeak/message/36889


But how would a person ever figure this out on his own?

If you had a suspicion that this matter would be governed somehow by 
a "Preference," you could turn to the "search" facility in 
Preferences:

Open up a Preferences panel, go to the ? page, type something into 
the what-to-search-for pane, and hit the Search button.

If you type "window", you'll get fifteen hits, including the one you need.

If you type "drop", you'll get six hits, including the one you need.

If you type "embed", you'll hit the jackpot right away.

   -- Scott


At 11:22 PM -0800 12/23/01, Ross Boylan wrote:

>When I create (or use) a flap, I can drag some test morphs into it.
>However, SystemWindows (which I think all my stuff is) will not stick
>in the flap but just drop behind it.  I have tried fiddling with their
>drag and drop setting and manipulating them in various ways, but
>always with the same non-stick result.


Cheers,

   -- Scott