Inserting Different Types of Stairs
The software provides three types of staircase and three different ways of inserting staircases.
· 
Straight staircase
· 
geometrical stair
· 
Landing staircase
For all types of staircase, input is terminated with ‘Enter’ or over the item ‘Complete with’ in the context menu activated with a right mouse click. When input is terminated, the properties dialog is immediately opened for that particular type of staircase.
For types of staircase which are entered as a polygon, you can recognize from the ‘staircase cursor’, i.e the representation of the staircase during input, whether a valid staircase can be created from the current sections, or not. For instance, if the angle of the last section of the staircase is too acute, the last segment will disappear, if calculation is not possible due to the current position of the cursor,.