To remove a Mask, the Settings must be set to show the Mask Zone Outline. See Calculation Zones Settings.
With the Mask Zone Outline visible, use the Erase command to remove the dashed outline as shown at right. The calculation points will be restored.
Calculation Zones masked with the Mask Point method, don't have Mask Zone Outlines to erase. It is necessary to draw a new Mask Zone that includes the points to be unmasked. The location of points can usually be assumed from adjacent points.
This process effectively says "Put the points back no matter how they were removed."
