Video Topics: 00:12 Layout Improvements 00:21 Create HTML Table 00:33 Default Childs for Nodes 00:48 Inline Layout for Some Child Nodes 00:59 Instant UI Preview for UI Nodes 01:15 Better Feedback when Adding Child Nodes 01:42 Link Form Node on Left Panel 01:56 Configure Form 02:31 Try it at https://instadeq.com/experiments/glooeye/v2/

Answered my question about what was closing the boxes, thanks. :) I take it you were able to link the editor to three left column, and leave the preview in the right column. That feels strange, to me, for reasons I can't quite enunciate. Perhaps because the lengths can be so different, and there is no visual cue what part of the right column I'm currently modifying. I'm wanting something like the way cartographers indicate that a portion of the map is at a different resolution. Like https://images.app.goo.gl/s5eyZYNQKGMVTjGs5