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The snap tolerance used for z-values, measured in map units.
[Visual Basic .NET] Public Property SnapZTolerance As Double
[C#] public double SnapZTolerance {get; set;}
Double value that defines the cylinder (defined as distance positively and negatively from snap point's Z-value) used to determine whether the point snaps to another feature. The z-snap tolerance is evaluated only after a snap agent in XY is satisfied. Default value is 0. SnapZTolerance is only applied when IEditorZ::UseSnapZTolerance is TRUE.