How can I make cross-project references?

There are two possibilities:

• either you create smart links in a text editor
• you add a specific cross project control which allows you to maintain a list of cross project links

Option 1: Smart links 

You can do this though the menu in the text editor

You can also just type #Project Id/Item Id# in a text editor

Option 2: Cross project link control

In the admin client you can add a cross project link control (see Input Fields). This will show up like this:

See an example below: