My printer (well, PrusaSlicer) always starts with a line around the object I am printing. See (1) in the image. --Why? What does that do?

There is also this line (2) at the front of the bed. --Why? What does that do?

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[–] 16 points 2 years ago

The skirt wipes and me the nozzle and also purges a fairly large amount of filament. Together that ensures when the print starts, it starts "clean".

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