Enabling Optional Display Elements
PowerPoint has a lot of optional screen elements that you may (or may not) find useful, depending on what you’re up to at the moment. The following sections describe them.
Ruler
Vertical and horizontal rulers around the slide pane can help you place objects more precisely. To toggle them on or off, mark or clear the Ruler check box on the View tab. Rulers are available only in Normal and Notes Page views.
The rulers help with positioning no matter what content type you are working with, but when you are editing text in a text frame they have an additional purpose as well. The horizontal ruler shows the frame’s paragraph indents and any custom tab stops, and you can drag the indent markers on the ruler just like you can in Word.
Note
The ruler’s unit of measure is controlled from the Regional Settings in the Control Panel in Windows.
Tip
The vertical ruler is optional. To disable it while retaining the horizontal ruler, choose Office Button 
PowerPoint Options, click Advanced, and in the Display section, clear the Show Vertical Ruler check box.
Gridlines
Gridlines are non-printing dotted lines at regularly spaced intervals that can help you line up objects on a slide. Figure 20-14 shows gridlines (and the ruler) enabled.
Figure 20-14. Gridlines and the ruler help align objects on a slide.
To turn gridlines on or off, ...
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