The Dot Curve Editor Tool is a new addition to the Inkset-up dialog of a PMM. The button will only work when the screening is FM and more than 2 dot levels are in the print mode. This tool is in place for users with some knowledge on editing dot curves.

The Dot curve Editor is found in Calibrator:  new pmm -> printer settings window.  

More info: on How to read the graphs and Change the dot distribution