I have a question about dimension styles. The attachment showing two lines (in red) and they are dimensioned with different dimension styles. The left dimension style is by default and the right is modified. I suppressed the dimension lines but there is one symbol (a dot) in the right one.
The dot is part of the dimension and is placed on the layer defpoints. If you don't want to see them on the screen, you either turn the layer off or freeze it. You don't have to worry about it if you leave the layer on because the layer defpoints is automaticly a no plot layer.