[Feature Request] Hyperlink Tags and Transclusion

Hey Nick,

I came across a service today called Roam and thought I'd drop you a link to them. They have an interesting innovation on the "workflowy" style nested bullet list system. Basically they have a wikitext-like syntax that creates a hyperlink tag which when clicked brings up a new view that shows all instances of that hyperlink tag. It's a neat addition.

Also I think a evolution of this concept (or perhaps alternative) would a wikitext syntax transclusion feature.

One of the problems with a nested bullet list is that it's inherently hierarchical. By using transclusion the information can be presented in an orderly hierarchical pattern while also retaining the flexibility for a single item to be used in multiple places in the hierarchy.

This could be visualized the normal way that transclusion is visualized or perhaps using something similar to the Adobe Bracket's "peek" inline editor feature.