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Question about G1 command and extrusion speed

I have a question about the G1 command in gcode.

If I have the line: G1 Y80 E20 F800

That means, linear movement, to Y=80. Extrude 20 mm, Accelerate to 800.

Does that mean it move to Y is with a speed of 800? What then is the extrusion speed? Is the speed then dependent on the way that is traveled, whilst extruding exactly 20mm? Does that mean "G1 Y80 E10 F800" the Extruder turns half as fast?

submitted by /u/prikolow
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