All it does is type cmd-right-arrow, option-down-arrow, or cmd-down-arrow if hot key End is tapped 1, 2, or 3 times.
(The 1 and 2 actions get triggered repeatedly in a 3 press, but it doesn't have any effect.)
This was provided to me by a helpful brainy guy who didn't want any credit.
"
I downloaded the ones that penhelm uploaded and his macros work for me. My guess is that some people aren't aware that the Home/End's group's permissions makes it so that they only work with TextEdit because that's the only app that I validated that those shortcuts work in when I wrote the macros. If you want those keys to work in some other app, then add the app to the group's permissions, but you have to make sure that those shortcuts work in that app."