An annotation that consists of a series of numeric tags attached to and describing a host element.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 18.0.0.0 (18.2.0.0)
Since: 2013

Syntax

C#
`public class NumberSystem : Element`

Visual Basic
`Public Class NumberSystem _ Inherits Element`

Visual C++
`public ref class NumberSystem : public Element`

Remarks

For a component-based stair, you can display tread/riser numbers for a run in plan, elevation, or section view. Sketch-based stair is not supported.