If you think about what a short format "manual" page would be, perhaps a "pamphlet" (pamp?) or "brochure" (bro) makes sense (tongue in cheek at the moment).
I was also sad to learn that I needed Ruby on my computers (I don't generally add it since I'm not qualified to secure it ... nothing wrong with the language other than my ignorance of it).
[ex currently is linked to a mode of vim (which I never use) on my system; eg isn't used but the system tells me it's for easygit. "pam" says no command found but that there are 23 similar. I don't know what program provides the suggestions precisely something in the apt ecosystem I suspect]