You can create a signature line by underlining blank spaces. The best way to do this depends on whether you want to print the document or distribute it online. Newer versions Office 2007 You can add a signature line to a document, add a graphic of your handwritten signature, or save a signature block as an AutoText building block. For information on adding a digital signature, see Add or remove a digital signature in Office files . Add a signature line for a printed document You can underline blank spaces for a printed document by pressing the TAB key and applying the underline formatting to the tab characters. Apply underline formatting to tab...