Hi geekmidget,

You got me thinking about this problem again, and I realized the functionality is already built into Construction Lines. While drawing a polyline, drag out a CLine from the current point to the previous point, press and hold the marker to display the menu, and enter the angle in Rotate CLine. Positive value gives counterclockwise rotation.

http://moi3d.com/4.0/docs/moi_command_reference11.htm#constructionlines

- Peer