Ooh, I use .cdl hex codes:
If bit7 is set, that marks the start of a function.
If bit0 is set, that makes the code active (or makes it appear like it has already been run).
A hex code of #$02 specifies that the byte is part of a data section.
A hex code of #$00 specifies that the byte is part of unknown code... will be most likely hidden under a thin red box.
Sour replied to me, in this thread, about all the different cdl bit’s meanings, but the ones listed are the only cdl values I use.
He also replied to me, in this thread, about the interesting .mlb file and how it’s used. Search for that knowledge; it’s quite helpful, to me, at least.