Removes duplicate vertices from a selection set of polylines. This occurs when one or more consecutive points within a given polyline contain the exact same coordinate. Having duplicate coordinates in this fashion can cause other problems in AutoCAD, especially with hatching.
Keyboard Command: PlnRemDup
This routine has a prompt for a fuzz distance. When comparing two points, if the distance between them is equal to or less than the fuzz distance, the second of the two points is removed from the polyline.