Hi, I'm working on my project Grafoscopio, to provide a outliner/notebook like experience to write and visualize data. Details can be found on [1]. [1] http://mutabit.com/offray/static/blog/output/posts/grafoscopio-idea-and-ini… I want to create modal nodes by tagging them, so If I mark a node like code it can behave like a workspace and execute code. You can see a small demo of this feature on [2] [2] https://archive.org/details/grafoscopio-tags-alpha1.mp4 My code for tagging nodes is this: ==[a]============================================= UI>>addTagsTo: a Node "Tags the node passed as argument with a value from the collection of tags available" | selection | tagsAvailable isNil ifFalse: [ selection := UIManager default chooseFrom: tagsAvailable title: 'Elija una etiqueta'. aNode tagAs: (tagsAvailable at: selection) ] ifTrue: [self messageNoTagsAvailable]. browser update. ================================================= But I have three questions: i. How Can I update the nodes views/behaviour without revisiting them? The code in [a] is updating the node trees, but not the particular node views. ii. How can I made the code in a node tagged as "code" get executed? iii. Can I embed playgrounds instead of workspaces in a browser pane, with the possibility to explore objects and get more details about them? Thanks, Offray