Iām sure could be awesome to have manual for a game on the Play date console.
Like in old times we had manual with game cartridge.
For this great feature need to do:
invent lightweight text format, maybe with images, maybe based on md or maybe on some structural lang like yaml - that will be simple to limit with a scheme;
UI: reader app;
UI: possibility to know that manual for a game is existing;
UI: some button to start read manual - run reader app - in can be long press on a game in the Launcher app for example;
extend package manifest with field that points to manual, or just put it in the root/manual
We could even avoid having to download and sideload a text file if the games just wrote their manuals to the shared folder and the reader(s) added support for reading from there. I'm in favour!
Open standard as offered above is great, I agree. But I suppose it would be ideal to see an app/service built into the OS and declared format row manual.