I vaguely remember using CTRL-7 to get the ASCII BEL character (0x07). This was a long time ago, and I don't see it on any current systems. Another special cas

I vaguely remember using CTRL-7 to get the ASCII BEL character (0x07). This was a long time ago, and I don't see it on any current systems. Another special case: On most keyboards (I suppose it's the terminal emulator that implements it), CTRL-SPACE emits the NUL character. (I find that useful because I use C-@ as the prefix key in tmux.)