Hi Peter! In Roassal 1, we had a ViewStack. We have removed it in Roassal2. The reasons are: (i) it was not used with more than two views and (ii) it has an overhead. Instead, we have one view, with fixed and non-fixed shape. It is better and faster. However, layers are indeed important. Most of graphic applications support layer, there is no reason why Roassal does not have one. My suggestion, is to made a proper builder for this. So, you are very welcome to give a try. I will review it. Something like: RTBuilder subclass: #RTLayeredComposition. b := RTLayeredComposition new. b addView: aView. b addView: anotherView. b build. It will simply have all the elements in one unique view You could then have option to add or remove layer by pressing some buttons. Should be pretty easy to do. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.