Comment #8 on issue 947 by tu...@tudorgirba.com: TextPresentations should support setting the selectionInterval on creation http://code.google.com/p/moose-technology/issues/detail?id=947
Yes.
Actually, now that presentations are dynamic, we should be able to directly set the port values like: andShow: [:a :x | a text selectionInterval: (1 to: x) ]
The only problem comes from the execution order that cannot be guaranteed.