Re: Possible or easy?
"While that can be ... and consequently isn't in the documentation."
An easter egg, IOW.
"It would be ridiculous to expect developers to document every technically possible use case for something, even some they had envisioned."
Video documentation could help here, as the developer's focus, scope, affinity for metaphor, etc. can more readily be surfaced via an interaction that is a social interaction -- an interview via AI, perhaps. Draw the information out. Put a face to the tech.