That's cool, I didn't know about any of those, despite having read the git man page a few times. I think my brain skips over / ignores whole sections of man pages. Something to do with the order they are written in, and the fact that I'm always after something halfway down. A lot of /<search> <n> <n> for me.

If, like I often am, you are just after examples for a command you've used many times but forgotten common flags for (-r or -R?!), the online resource:

  $ curl cheat.sh/grep.    # or replace grep with <command>

will work in your terminal, minimum of fuss. There's the option of self-hosting it (docker based) if you are regularly working in an offline/lab environment.