This tool allows you to insert a true vertical line between two points. Using this tool there is no concern for constraints.
To use this tool:
1. Click on the line tool (shown above) to open the modifier.
2. Enter the length of the line to be drawn and press the [spacebar].
3. Once the values are entered, click where the line is to be placed and the use the mouse to set the direction (either above or below the initial left click). A second click will drop the line onto the drawing.
