Analog to this question I've been wondering WHAT is to
\bfseries is to
(... and for
MakeUppercase, etc., which also seem to be text-block commands as explained here.)
Is there a "switch"/"declaration"/"modal command" (what is the correct term here?, is there a difference between them?) that would allow one to turn something into lowercase/uppercase in the same way that one would use
\scshape for example, i.e., not as text-block command with the curly braces? Or how to create such a command? I couldn't find any clue on the forum.