Structure
The tree is structure: roots, child nodes, multi-select, status, themes, locks, and private nodes. Structure answers where does this belong? and how does this branch relate to that one? A node is not just a label. It is a container that can hold meaning and references.References
The gallery on the selected node is references: images, audio, video, documents, URLs, embeds, stacks, tags, and editable workbenches (spreadsheets, rich documents, calendars). References answer what am I looking at, listening to, or citing while I work here?Meaning
Meaning sits above raw material:- Per-node notes and summaries
- Per-slot notes
- Tags that cut across the flow
- The context you deliberately share with Joe