PC-DMIS allows you to project a reference distance. This option in the Angularity dialog box (Insert | Dimension | Angularity) is used with line features to calculate the angularity dimension.
For these features, the points used for the angularity calculation are the end point of the axis and a point projected from this end point along the feature axis.
The distance between these two points is the referenced distance. For other features, this distance has no effect on the dimension. This option is useful when the dimension needs to be calculated a certain distance along the feature.