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Maplex contour label laddering options.
| Constant | Value | Description | 
|---|---|---|
| esriMaplexNoLadder | 0 | Indicates that laddering is disabled. | 
| esriMaplexStraightLadder | 1 | Indicates that the ladders should be straight. | 
| esriMaplexCurvedLadder | 2 | Indicates that the ladders should be curved. |