Type impTwoMarker (marker1 number, marker2 number) in the MEL command line. For example, if your marker centroid locators are “m001” and “m002”, type impTwoMarker(001, 002). This, like all MEL commands, is case-sensitive. A dialog box will open, allowing you to select your digitized data (xyzpts.csv) file. Be sure that you enter your marker numbers in the same order that you selected the locators. For example, if you selected centroid locator 001 and then centroid locator 002, you should type impTwoMarker(001,002).