The check mark next to the Ruler command tells you that the rulers are currently displayed. Click the Ruler command.
The rulers are now hidden.
Open the View menu and choose Ruler again to bring the rulers back.
INTRODUCTION
By default, a horizontal ruler appears underneath the toolbars in the Word window, and a vertical ruler appears on the left edge of any documents open in that window. You can use these rulers to quickly adjust tabs, indents, and margins (you'll learn about these formatting techniques in Parts 6 and 7). You might want to hide them, however, so that you can see more of your document. You can easily display them again whenever you like.