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M702: Unload filament
- This command can be used without any additional parameters.
In contrast to M701 this code is intended to unload the previously loaded filament from the selected tool. RepRapFirmware will do the following when called:
1) Run the macro file "unload.g" in the subdirectory of the given material (e.g. /filaments/PLA/unload.g)
2) Change the filament name of the current tool, so it can be reported back to Duet Web Control