I think that QTips uses it in his latest skin
http://www.xlobby.com/forum/viewtopic.php?t=2325
he used a special event that changed the way ZP deals with the size of its window. Otherwize, you cannot select the size you want
Except that, you only have to create a text zone in your screen, give as
- ID : screen_TMainForm (where "screen" is the name of your screen without .xml)
-text : plugin>XMoveWindow>TMainForm