This feature can be drawn polyline. Polyline is a single entity by a set width or a different width of line or arc thereof.
1. Click on the menu bar, the "Drawing -> polylines."
2. Click the Drawing toolbar "draw polylines Command" button 
.
3. Enter Pline command line, and press Enter.
After the execution command, the command line displays the following information:
Command: Mx_Pline
Specify a starting point:
The current line width of 0.000
Specify next point or [arc (A) / width (W)]:
Specify next point or [arc (A) / width (W) / closing (C)]