If you have upgraded from ProSelect Version 3 and are now experiencing a problem where the mat between the keyline and image is now not displaying (ie the keyline is visible but the mat is not), then here is why.

In the newer versions of ProSelect, any spaces in border styles are now transparent.

If you wish to fill that area with a solid color then use a wide keyline instead. There is a limit on the maximum width of a keyline so you might need to put two or more together to cover the space that you want.