If the selected object is a line or an arc, the following prompt is displayed:
Object selected is not a polyline.
Do you want it to turn into one? <Y>: Enter y or n, or press ENTER
PEDITACCEPT system variable is set to 1, this prompt is suppressed, and the selected object is automatically converted to a polyline.
If you enter y, the object is converted into a single-segment 2D polyline that you can edit. You can use this operation to join lines and arcs into a polyline. When the