[Newbies] Morphic - how to make a submorph not visible outside his owner ?

[David Corking]

I should be more specific. Try

m1 clipSubmorphs: true.

Hope that helps. David

p.s. I think your do loop pre-empts the Morphic UI loop.
Have you read John Maloney's tutorial on the step method?
http://stephane.ducasse.free.fr/FreeBooks/CollectiveNBlueBook/morphic.final.pdf
In the meantime, you could switch your Transcript hack for this hack :)
  m1 refreshWorld.