hello I am trying to use mach 3 as a single use machine, what I need is to start mach 3 with a g code pre loaded, I have seen online someone has done it using the reset button and a macro call in the general configuration / initialization string, example:-

m777  in initialization string
m777.m1s saved in macro folder
written in m777    loadfile ("C:\Mach3\GCode\roadrunner.tap")

this doesn't work what am I doing wrong?
also I would like to switch off the shut down message when closing the program

thanks