I've always been a bit weirded out about all of that.
For those born in the current millennium: pressing Enter is ^M "Carriage Return" because with out linotype machines, that would make sure you didn't type past the paper. Only you also needed the bar to roll, so you had ^J "Line Feed".
For a while systems would send ^M^J when you pressed the enter key, and some still do (Windows). Others just shortened down to ^J with the ^M implied.
^K, ^L, & ^Y are their own stories too.
@jrconlin
> ^K, ^L, & ^Y are their own stories too
what’s the ^Y story?