About [[Pywikibot:Protect-ref/en]]
Fragment of a discussion from Translating talk:Pywikibot/LiquidThreads
Seems this has been forgotten, but "referring from" is definitely incorrect and should be changed to "referring to", as Purodha said in 2015.
The same also needs changing in Unprotect-ref ("Bot: Unprotecting all pages referring to %(page)s").
Done in gerrit:904454