Wordpad is a basic text editor that comes with some versions of Microsoft Windows. Wordpad does not have a menu line-spacing feature, which leads to some confusion regarding line spacing, particularly how to change the text from double- to single-spaced. Fortunately, there is a keyboard shortcut you can use with Wordpad to help you return your text to standard single spacing.
Click on "Edit" and select "Select All." This will highlight all of the text in your Wordpad document.
Push and hold the "Ctrl" button on your keyboard.
Press "1" on the top number pad while holding "Ctrl." The Wordpad line spacing will change from double to single.