Original post by: Alina ,
Hey @vorchak, the M0 pauses the print until Palette is ready and filament is loaded. Once the filament is made and loaded properly, pressing “start print” on Palette or in OctoPrint unpauses and the printer is able to start. The M0 is right at the top of the code because extrusion commands shouldn’t happen before filament is properly loaded. Hope that helps!