DIDs and httpRange-14

I wouldn't call this a high priority issue, but there have been
recurring questions on whether a DID is a URL or "only" a URI, what a
DID identifies (Alice? Or Alice's DID Document?), and what it means
exactly to resolve/dereference a DID (URL).

Maybe this isn't an actual problem, but for some reason it keeps
bothering me.

So I thought I'd write up
<https://docs.google.com/document/d/1gSUP9DEp7IO8jyNDsVnC-7Ed6PjbMRxl89nGYUoWoeI/>
my current understanding of those questions.

Markus