>What would then happen if you checked "Cap Ends", but then unchecked "Cap 1" and "Cap 2", does that mean cap ends is on because "Cap ends" is checked or does it mean it's off because "Cap 1" and "Cap 2" >are un-checked?

Or... make it impposible to uncheck both caps. Only one can be unchecked to disable both you have to uncheck - Cap Ends.

Or if you uncheck both caps, Cap Ends unchecked automaticly and next time when you check it it will check both caps.