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|The distance filament will reverse before each [[Slice Settings/Filament/Filament/Retraction/Minimum Travel Requiring Retraction|qualifying non-print move]].|*millimeters (mm)
Can be zero. == [[Custom GCode Variables|Custom GCode Variable]] == <code>retract_length</code>|
=== mm ===
In this example, filament will reverse 6.8 mm before travelling 20 mm or more.}}
