Dremel 3D20 Original Instructions Manual page 14

LEVEL
Tapping this option will begin the build platform
leveling process (see page 20 for instructions
on leveling the build platform). The touch screen
will display instructions on how to level the build
platform.
HOME
Tapping this option moves the extruder and build
platform to the zero position.
JOG MODE
Tapping this option will display the options for
positioning the extruder and build platform along
the X-axis, Y-Axis, and Z-axis.
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