I have a simple question that has been driving me crazy. I've searched the User Guide and the various developer's guides and have not been able to find the answer anywhere, so I thought I'd ask it here.
When laying out fields in layout mode, the fields have a symbol in the lower right corner that looks like a push-pin. Fields inserted from the same table have green pinheads, fields inserted from related tables have yellow pinheads. What is the meaning of the pin and the pinhead colours?