GGU-SIEVE: "Extra GSDs preferences (2)" menu item

This menu item is available if you would like to emphasise a 2nd area between 2 grain lines differently. You will see the following dialog box:

You can set a desired colour and hatching line for this 2nd hatching area. You can also assign a different colour, pen width or hatching line to the selected boundary hatching lines using the "Extra-KVS pens" button.