WIP: Spike out quick reference #2156
                
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This is cheat-sheet format
No code yet, because I need to finish:
the tl;dr: is that these quick reference documents show everything we can do (as long as we wouldn't recommend that folks should avoid using a thing -- at least, not without
<details>explaining why / why not).I dunno if it'd be possible to render all of this on the same page, but that would make for some very nice ctrl+f