Add Domain Map for use cases

[jandrieu]

Something like the one in the VC doc: https://w3c.github.io/vc-use-cases/#user-needs

[philarcher]

I'm leaving this to you @jandrieu ;-)

[jandrieu]

This is still on me. I've started this, including conversations with @philarcher. It still needs more work.

[philarcher]

Done. See https://w3c.github.io/did-use-cases/#domainMap

[TallTed]

tl:dr; There ain't no easy fix for the tiny label text. :-/

SVG doesn't set a font-size for the text class which covers the box labels; this is inherited from the Respec stylesheet (and it's OK when the SVG is "raw"). But then the SVG gets scaled down roughly 61% from "original" size, and so does the effective font-size.

Changing the SVG source to use 24px for the text class therein would, I believe, make the labels legible for all ... but then many of the labels overflow the boxes.

Wider boxes would make the Respec "scaledown" more severe, and require a larger font-size, which would force even wider boxes... wash, rinse, repeat.

Taller boxes would allow for line-breaks in the labels, but SVG 1.1 can't wrap text(!), even with manually inserted <br /> elements. (This might change in SVG 2, but that appears to have stalled; though some pages indicate they're (re?)chartered into this year, the latest editor's draft I could locate is dated Oct 2018.)

That's all I've got...

[iherman]

Well, it seems that I will have to put on my glasses when looking at the diagram :-(

[philarcher]

Needs final update but this is basically done. If I can improve the legibility, I will.