If you set a reference datum plane within the model it automatically displays in drawing views where the reference datums are perpendicular to the screen (on edge). If you erase a set datum plane, use this procedure to show it again.
3. Click the check box against the datum planes that you wish to show in the drawing. Additionally, you can click
![](../detail/images/selr.png)
to select and show all the listed datum planes. Click
![](../detail/images/unselr.png)
to deselect and not to show all the listed datum planes.