How to Add a Line in a Word Document

1. Launch Word and open the desired document in which you want to add a line.
2. Click on the 'Drawing' tool on the toolbar. The location of this tool depends on the version of Word you are using. For example, in Word 2007, click 'Insert' on the top menu. Next, click 'Shapes' on the Illustrations tab and then click the 'Lines' tool on the drop-down menu. The mouse pointer will change to a cross hair that looks like a plus sign.
3. Click on the place in your document where you want the line to start. Continue to hold the mouse button down and drag the mouse to where you want the line to end. Release the mouse button and the line appears. You can create horizontal, vertical and diagonal lines in your Word documents in this manner using the Line tool.