To Draw Lines

1. Click Drafting tab > Draw panel > Line.
2. Specify the start point.

   You can use the pointing device or enter coordinate values at the Command prompt.

3. Complete the first line segment by specifying the endpoint.

   To undo the previous line segment during the LINE command, enter u or click Undo on the toolbar.

4. Specify the endpoints of any additional line segments.
5. Press Enter to end or c to close a series of line segments.