I successfully add custom commands to a menu, I have to call them by typing Alt+E+F+S, then selecting a command with arrows and press Enter. But I seem to be unable to assign a mnemonic shortcut key to a label, I am not talking about a global hot key like Control+F11, just a local underscored character, so I can for instance type Alt+E+F+S+B for "Beautify". I tried to set a label with an underscore in it, like "_Beautify" and many other characters, but it does not work.