The idea is for Board Web Engine to enable a feature that is usually existing with links in HTML browser and allow for links be open in new tabs using right click menu or mouse 3.
First, It's very convenient for the end-user to be able to decide for them-self where a new tab is pertinent and when it's not. Also it may be slightly frustrating to end-user for the application not to comply with web "standard".
Currently if you have a label, a button, a cell in dataview that open a link you can't do that natively.
Workaround : In Desktop client you can do this by opening the target screen first using the screen list, then clicking the link. The 2 tabs will be open.
In Web, you can duplicate you're tab then click.