We will show you how to add unobtrusive line numbers in the left margin of a Word document.
Open your Word document and smack the Page Layout tab on the ribbon.
On the Page Setup dialog box, smack the Layout tab.
Then, click Line Numbers.
The Line Numbers dialog box displays.
choose the Add line numbering check box so there is a check mark in the box.
Click OK.
Click OK on the Page Setup dialog box to close it.
you’re free to easily change the options or turn off the numbering when its not needed.