ArcObjects Library Reference (Display)  

esriTextDirection Constants

Text symbol direction options.

Constant Value Description
esriTDHorizontal 0 The text draws horizontally.
esriTDAngle 1 The text draws along an angle.
esriTDVertical 2 The text draws vertically.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.