Revu has a number of Snap options that allow you to more accurately place markups and measurements on a PDF. However, if you don’t know that one of the options is enabled, your mouse cursor may appear to jump, move unexpectedly, or select the wrong point. The buttons to enable and disable Snap options are in two locations, the Settings menu and the Status Bar, which is at the very bottom of the Revu window. Each button is highlighted when it is active. Press the F8 key to display the Status Bar if it isn’t currently displayed.

There are six buttons in the Status Bar so you can quickly toggle these settings. It is important to note that displaying the grid, Reuse and Sync do not have snap functionality; however, they all relate to markup placement and are therefore important to discuss. The order and names of the buttons changed slightly in Revu 2016.

Show Grid / Grid Shift+F9: Displays blue grid points on the PDF page, but does not snap to them.

Snap to Grid / Snap (Revu 2015) / Grid (Revu 2016) Ctrl+Shift+F9: Cursor snaps to the nearest grid point, even when the grid is not displayed.

Snap to Content / Content Ctrl+Shift+F8: Cursor snaps to the underlying content of the PDF. A small blue-filled square cursor will display when it is near a point that it will snap to. A square (without the blue fill) will display when the cursor is near an object that it will snap to. For example, the image below shows the cursor when a Length measurement is snapping to a point:

Snap to Markup / Markup Ctrl+Shift+F7: Snaps to other markups in the PDF, just like Content snaps to PDF content. Also displays horizontal and vertical “construction lines” that allow you to snap to the horizontal or vertical location of points on other markups, even if they are not currently displayed. The Markup snap is very useful when creating forms.

Below are images showing some of the ways that Snap to Markups works:

	Snap to a point	Guidelines creating a Polygon	Guideline creating aligned Rectangles

Reuse Markup Tools / Reuse: Enables the same tool to be used multiple times without having to reselect the button on the toolbar. This mode is helpful when adding the same markup onto the PDF multiple times.
Synchronize Views / Sync: Synchronizes the display of split views when viewing the PDF using the Split View modes.

More Information, Tips and Keyboard Shortcuts:

For more information about using Revu, please check out the video tutorials and FAQs on our Support page, as well as the Revu Help Guide.

• The Content snap only works with vector content in the PDF. For example, it will snap to lines and arcs in a PDF created from a CAD drawing. It will not snap to image content, like in a scanned PDF. Click here for more information about the different types of content on the PDF page.
• The snaps can be temporarily disabled by holding down the Ctrl key when creating a markup.
• Hold down the Shift key when creating a Line or Length measurement to snap the line to 0, 45 or 90 degrees.
• The Snap to Content is enabled by default in the Measurement tools. Hold down the Ctrl key to disable the Content snap temporarily or uncheck the Snap to Content check box at the bottom of the Measurement tab to disable it permanently.
• You can customize the grid size and what types of points in the content to snap to. Click Settings > Preferences then click Grid & Snap. Or press Ctrl+K and then click Grid & Snap.
• Split View allows you to divide the Revu display into multiple panes so you can view multiple PDFs at a time.

Video Tutorials:

• How to get rid of dots all over the screen
• How to user Revu’s Snap function

Troubleshooting

Revu 2017 & Below

Interface & Navigation

Are your markups or mouse cursor sticking to certain points on a PDF? You may have to change your Snap To settings.