1. Select the portion of the document that you want double-spaced. To select the whole document, choose Select All from the Edit menu or press Ctrl+A.

2. Choose Paragraph from the Format menu.

3. Click on the Indents and Spacing tab, then select a line spacing setting from the Line spacing list.

Note: If you have already inserted an extra blank line between paragraphs or blocks of text, you will have to delete the extra paragraph marks, unless you want that extra blank line. You can use the Show/Hide button ¶ on the Standard toolbar to display the paragraph marks.