For certain types of documents, you may want to add line numbering in the margin of the page. Line numbering will help you refer to specific portions of the document. Word will number each line of text in the left margin of the document.
1. To activate line numbering, click File>>Page Setup.
2. Open the Layout tab and click Line Numbers.
3. Select Add line numbering.
4. Click OK twice to close the dialog boxes and apply the line numbering.

