When a user adds an entire line underline to a Word2003 document, it is often done by entering the spaces and adding an underscore. In fact, if you use the Word2003 "borders and Shading" feature, you can quickly add an entire line underline, as described in the following steps:
Step 1th, open the Word2003 document window and press ENTER to insert the line where you want to add the entire line underline. Then select the line you want to underline, and then click the format → borders and Shading menu command on the menu bar.
Step 2nd, open the Borders and Shading dialog box, and in the Borders tab, line style keeps the default setting and the Border line button between the single hits. When you are finished, click the OK button, as shown in Figure 2008080201.
Figure 2008080201 "Borders and Shading" dialog box
The entire line underline is added as shown in Figure 2008080202.
Figure 2008080202 Underline sketch