ArcObjects Library Reference (Editor)  

esriCourseType Constants

Types of traverse courses.

Constant Value Description
esriCTDirectionDistance 0 Course defined by a direction and a distance.
esriCTAngleDistance 1 Course defined by an angle and distance.
esriCTCurve 2 Course defined by a tangent curve.
esriCTTangentCurve 3 Course defined be a non-tangent curve.

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Available with ArcGIS Desktop.