I am accustomed to using the CTRL-Y (or CTRL-DEL) keys in any editor I work with...
While you are writing your next reply, try pressing, in the middle of a sentence, Ctrl-Z or Alt Backspace; then, immediately after, press Ctrl-Y. You will notice that this key has an important standard Windows function.
Of course, you can override any standard GUI key, but is that a good idea??