Gives you the ability to easily link to the various forms of content you have.
Settings page. Toggle linking to custom post types, taxonomies and content across a multi-site network. (The multi-site options is only available to super admins in a network site.)
Highlighted text that is to be made a link and the Link to Your Content icon in the rich text editor.
The Link to Your Content main window showing the full array of options available. Select the site you want to browse and the content you want to link to.