Each page in Microsoft Word is divided into an invisible grid. When you create an object, it is lined up against the nearest grid lines to the place you create the Word object.
If you have a difficult time lining up drawing objects in Microsoft Word, you can display the drawing gridlines to tweak positioning. The drawing gridlines are the thin lines that appear on your on-screen document in Print Layout view, similar to the grid you can overlay in photo editing applications like Photoshop.
To display drawing gridlines in Word 2007: On the View tab, in the Show/Hide group, select the Gridlines check box.