TierTime UP mini 3 User Manual page 59

Base height determines the height of the image raft.
Model Height determines the bumpiness of the
printed model.
Pen: Use "Pen" to edit the image.
Text: Use "Text" to add texts on the image.
Crop: Use "Crop" to crop the image to different size.
Back: Exit the image editing function and save the image.
Click the "Toggle Color" button will invert the
pixel's brightness, which will invert the raised
portions to sunken, and vice versa.
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