draw return stair (plan) - command description

To draw return stair:
1. Specify story height
2. Specify insertion point
3. Specify staircase width
4. Specify staircase length
5. Select right step dimensions from dialogue box

Command depends on setting right units in APLUS. To do so, use command:
aum - millimetres
aucm - millimetres
aumm - millimetres