Stairs and Staircase
The Indoor Lego stairs template 
creates a user adjustable number of steps
which comprise a flight of stairs. Leaving the dialog with the OK
button will create the stairs template and switch to the Drag Mode.
The staircase template 
describes a whole set of stairs building up
a staircase. The stairs parameters can be set using the left side of the staircase
properties dialog. For the staircase itself, some additional parameters are necessary.
These parameters can be found on the right side of the properties dialog. There is also an
option for the creation of staircase surrounding walls. By default, no surrounding walls
are created.
If the dialog is left by pressing the OK button, the staircase
template creation process will start.
Note: This process possibly takes a little time
because of the number of walls to be created
After the template creation, the
drag mode is activated.