To Taper the Width of Individual Polyline Segments

1. Click Modify > Object > Polyline.
2. Select the polyline to edit.
3. Enter e (Edit Vertex).

   The first vertex is marked with an X. Move to the appropriate vertex with Next or Previous.

4. Enter w (Width).
5. Enter new starting and ending widths, and press Enter to move to the next vertex. Repeat steps 4 and 5 for each segment.
6. Enter u (Undo) to reverse actions back to the start of PEDIT.
7. Enter x (Exit) to end editing vertices.
8. Press Enter to end the command.