To save the grading rule, select the points from the piece and, then, click on the Save the grading rule button. The window that opens will allow you to save a *.rulx file that contains the selected points’ grading rules. The Save grading rule function can also be applied as a step function: first, click on the function’s button, then select the points using the step function. After having selected the points, click on Validate, and the grading rule saving window opens.