Editing Polylines
To edit a polyline
- From the Modify menu, choose Object>Polyline.
- Select the polyline to modify.
- At the Command prompt, edit the polyline by choosing one or more of the following options.
- Enter c (Close) to create a closed polyline.
- Enter j (Join)to join contiguous lines, arcs, or polylines.
- Enter w (Width) to specify a new uniform width for the entire polyline.
- Enter e (Edit Vertex) to edit a vertex.
- Enter f (Fit) to create a series of arcs joining each pair of vertices.
- Enter s (Spline) to create an approximation of a spline.
- Enter d (Decurve) to remove extra vertices inserted by a fit or spline curve and to straighten all segments of the polyline.
- Enter L (Ltype Gen) to generate the linetype in a continuous pattern through the vertices of the polyline.
- Enter u (Undo) to reverse actions back to the start of PEDIT.
- Enter x (Exit) to end the command.
Modify toolbar: 
Command line equivalent: PEDIT