Hi, below I am posting the cde file and stm file I created this ladder. You can use the ladder.stm file by copying the file to the folder where the program is installed: ideCAD Architecture 6 / stair in any of your projects by entering the ladder command and selecting this type. When you look at the cde file, you will see that the outer contour and the exit line are drawn in 2 dimensions with the route command (the exit line must be drawn considering the exit direction, that is, in the direction of the arrow). When you select the outer contour and then the output line with the create staircase command under the staircase command, the area you draw will be transformed into a 3-dimensional staircase library.