Properly support PRINT_BREAK command #3
Description
As documented in the GB programming manual, the BREAK packet is designed to go from the GB device to the printer to tell the printer to stop. When received, this should abort the current received file in progress.
However, a question of this is, should it remove the current file that is being printed (files are saved once a full row of two vertical tiles are received), or should it leave the artifact that was in place and just mark the file as completed? The former makes sense from the standpoint of aborting a print and not wanting to keep it. But the latter is how the printer would work in real time; that is, whatever was printed would stay printed.