In most of ShortPoint design elements, where there is a Link field, there is also a field called Linking Option. It allows you to choose, what happens after the user clicks an item on a page: will it open in a new browser tab, in a separate one, or in a highlighted box on the same page.
The Default linking option will make the link open in the same browser tab after the user clicks it. Like this:
Lightbox linking option will create a highlighted box in the middle of the page where the linked content will be displayed. Like this:
With this one, the linked page will be opened in the new tab in your browser:
The Dialog linking option work very similar to Lightbox; nevertheless, Dialog will cut off the header and footer of the page wherever possible, presentiong only the main page content, like in this example (notice how the Ribbon does not appear in the highlighted window):