Targets allow you to have the Page open in a new tab or perform another action.
From editing a Menu item, navigate down to the Target field. Target is the third field listed in the modal, click on it to begin typing a valid target variable.
Here, you can add href HTML tags to perform a variety of actions:
"_blank" - Opens the linked document in a new window or tab
"_self" - Opens the linked document in the same frame as it was clicked (this is default)
"_parent" - Opens the linked document in the parent frame
" _top" - Opens the linked document in the full body of the window
"framename" - Opens the linked document in a named frame
such as:
<a href="INSERT URL FOR MENU ITEM HERE" target="_blank"> INSERT MENU ITEM NAME HERE </a>