To clarify Wims original post since it caused a little confusion.
Wims is requesting that when an alt key combination is not assigned in a dialog using &X, mirc should fall back on its own default alt key combinations rather than doing nothing.
This could be quite useful. Possibly confusing if you are not expecting a dialog to have a certain key conbination, yet it does and performs the wrong action, but useful non-the-less.
Maybe an addition to the 'option' declaration in the dialog code could be used to determine mircs behavior with the alt keys. (nokeys,dialogkeys,mirckeys,fallbackkeys,whatever)
