Precisely Placing Markups with Grids
Grid and snap-to-grid functionality is included in Revu to aid in precise placement of markups.
Viewing the Grid
When the Grid is enabled, a dotted grid background appears on the page. This grid is a guide only and will not print. Click 
Show Grid on the Status bar
The grid can also be turned on and off from the Grid & Snap Preferences by selecting Show Grid.
Snapping to the Grid
When Snap to Grid is enabled, markups will automatically snap to the nearest grid point. Click 
Snap to Grid on the Status bar
It can also be enabled in the Grid & Snap Preferences by selecting Snap to Grid.
To override Snap to Grid without turning it off, press and hold