To modify a plane, click over its graphic image, or write its identification (name and number) on the Plane entry. To modify a list of planes, press the button List (after creating the list of planes with Plane->Select). Parameters for empty entries or Local choices remain unchanged.
To change a plane name write the new name in the Plane entry, followed by the plane number (GAMGI needs the number to identify the plane). To change the name for a list of planes, press List first and then write the new common name in the Name entry.
The visual representation of an object is always scaled by its own scale factor multiplied by the scale factor of all its parent objects until layer, inclusive.