Last update 6months ago - Need help

[tyeth]

Hi, I'm trying to combine the snapmaker gcode and this ([project]https://github.com/appliedengdesign/gcode-reference) to get better vscode support for snapmaker gcode.
I can't work out if this project is dead, the gcode hasn't had any update in 6months, but the M03/M04 commands for CW/CCW spindle power use P (percentage power) for M03 but S(speed out of 255) for M04.
Do both commands actually support both? Can someone at the company be tasked with updating the documentation inline with the snapmaker controller github project (i.e. I was going to trawl through the snapmaker marlin code for answers, but can you please instead)