Some variants of dimensioning are admitted especially in combination with overviews due to the possibility to specify the reference points for coordinate dimensioning and the alignment of the dimension chains differently.

The picture below shows two dimension chains with coordinate dimensions. The dimension chain (a) has been related to the UCS origin (a1) and the first and last coordinate measure has been deactivated. The dimension chain (b) has been fixed to a free reference point (b1) and negative coordinate dimensions have been admitted. These now can serve as relative height indicators.

In addition, a dimension chain (c) has been attached the position of which is determined by the first two measurement points (c1) and (c2). Then, the two holes (c3) have been added as further measurement points. This would also have been possible by modification via the (Insert Dimension) tool.