Creates a stair.

Geometry
Sets the geometry settings for stairs. Numerical values indicated in parentheses correspond to the labeled geometry in the preview image.
- Stair Width (1)
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Specifies the width of stairs.
- Maximum Tread Distance (2)
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Specifies the maximum distance between treads.
Shape
Sets step and stair shape.
- Step Data
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Specifies step data such as tread standard, tread shape, and dimensions, as defined in the Select Step dialog box.
- Stair Shape
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Specifies the stair shape options such as material standard, type, and size as defined in the Select Stair Shape dialog box.