One question I have about the noflo UI is whether it supports the concept of subpatching.  I want to define a box's function by zooming into it and filling it with more boxes.

It's not a difficult UI to imagine.  But to even have parity with Pd's scattered toplevel windows there would additionally need to be a way to quickly navigate from one branch to any other in the tree, and to pair distant branches in order to copy/paste content.  (For example, think of putting a patch window next to a subpatch window you got from opening three nested abstractions deep into a help-document.  If you're copying an object chain from that subpatch, you don't want those three parent patches in your view.)

Atm I'm just punting by using the multi-window UI that tcl/tk has.  But if there's a way to work the idea of navigating subpatches into that framework, that'd be great.

-Jonathan