I've been wanting a tool like this forever - ideally you can enter/exit these scopes/contexts so that everything above fades away. I like to think about problem

I've been wanting a tool like this forever - ideally you can enter/exit these scopes/contexts so that everything above fades away. I like to think about problems in these scopes and then have the ability to "zoom out" to collect/link things, without disturbing the internal contents. Kinda like the C4/icepanel stuff but without so much pomp and circumstance.