Hello, It's been a while since I tried out Pharo. I always struggled with Morphic UI's, but I noticed Spec and there seemed to be enough examples floating around that I thought I'd give it another try. Is Spec "here to stay?" Is it worthwhile to figure it out? It seems like with the developing possibilities of OSWindow-SDL2, one might use Spec to compose native widgets as well. My main question is about synchronizing domain changes with a Spec UI. For example, if I create an empty list of items: aList := OrderedCollection new. And create and open a ListModel that uses that list: aListModel := ListModel new items: aList; openWithSpec; yourself. I get a nice empty list. If I add an item to my list: aList add: 1. Then I need to update the list with another: aListModel items: aList. To see it show up. Alternatively (this seems wrong), I can add an item to the ListModel listItems directly: aListModel items: (aListModel listItems add: 1; yourself). Is that basically what you need to do to maintain synchronization between your domain list and the Spec UI representation of that list, or am I missing something? Thank you, Rob