Select the Position of the Stairs

• Enter the values in the fields for east, north and up in the Centre Position frame. The user can also change the reference by entering the name of an existing element in the Wrt field. If the field is greyed out, click Coordinates locked to unlock it.

• Click Pick position to select the position in the graphical view. The Positioning Control window is displayed. Follow the prompt Pick Position (Snap) Snap:. To avoid changing a desired value in a field, click Coordinates locked to lock it.

The default position is at the origin of the level.