I was working with WordPress project in last week and I came across client suggestion that he want to open the menu links in new tabs. Menu links were coming from WordPress Menu (Appearance > Menus). Everyone knows, in HTML it is achieved by adding target attribute to anchor tag to open link in new tabs or window.
To achieve it in WordPress Menus, I open the menus section and was searching for the target attribute option but unable to see at first moment. After a pause of few minutes, I open the screen options and is a option “Link target” under Show advanced menu properties. You need to tick this so you can see “Open link in a new window/tab” with check box for each menu item. Voila!