Back again

Not related to G49 but to the code used here.
I'm looking to try drag engraving, so i need the spindle off.
Fusion can't post with a zero spindle speed, it faults and aborts.
So, my thought is to set a speed of 1rpm in Fusion - the mill cannot do this.
Then edit the file load script a little to search this time for "S1 M3" and comment that out.
Does that sound workable - there is no way a proper job can be loaded to run at 1rpm so that should be ok, I also cannot think of any other time that "S1 M3" would appear in code???