Project basics : Showing and hiding grid lines
 
Showing and hiding grid lines
You can use grid lines to guide you when repositioning or resizing photos and videos. You can also use grid lines to line up titles in your movie.
To show grid lines
1 In the Edit step, double-click a clip to display the Options Panel.
2 Click the Attribute tab and choose Distort clip.
3 Check Show grid lines.
Click to adjust grid line settings.