Just a stub for now.
XXX stop commands are color changes with the color changing to the same color it was just at.
So they will appear as 0x7F 0x08 in the files. And just duplicate the color in the appended color log.
The command stitches are flagged as 0x7F, they are always given a dx dy value. The 0x7D means a big stitch and uses 2 bytes little ended to encode the dx, dy
After 0x7F the known commands are:
The Compucon version of XXX sometimes uses 0x0A and 0x0B as such to specify the needle. And ends with 0x18 rather than 0x7F. The assumption is that that might be needle 14 stop.