Guessing this is more of the Unix style key bindings you mention in the post, found this at Cocoa Text System.
To Kill some text is basically the same as using the ‘Cut’ command, but in OS X uses a separate mechanism, that is localized to the current buffer. By default ‘Ctrl-k’ kills everything after the insertion point on the current line.
Yank is the analog of the ‘Paste’ command. By default, ‘Ctrl-y’ yanks back whatever was most recently killed.
by Chris — Mar 23
To Kill some text is basically the same as using the ‘Cut’ command, but in OS X uses a separate mechanism, that is localized to the current buffer. By default ‘Ctrl-k’ kills everything after the insertion point on the current line.
Yank is the analog of the ‘Paste’ command. By default, ‘Ctrl-y’ yanks back whatever was most recently killed.
Very handy, I'm sure!