Wasn't quite sure how to title this one... 

This happens to me with both angular dimensions and arc-length dimensions.  In the pic below, it's an arc length.  How would I force the dimension to the other ("bottom") side of the circle? 

With angles, say I have a 30 degree angle.  Sometimes, Solidworks wants to show it as a 330 degree angle.  Still correct, but not what I always want.  How is that fix forced? 

Thanks.