If you need to link items like docs or tasks to another task, you can do so in Dart.

To start, open a task you want to link. Then, go to the top right of the task and click on the link icon to copy the task link. Finally, go to the task you want to link to and cut and paste it into either the comment or description section of the task:

You can also go to the "more" icon at the top of a task and choose "connect a task, doc, and more"

From here you have the option to:

Linking docs works basically the same way. To link a doc to a task, first go to the doc, grab the link, and then go to the task, and paste the link into its description or comment section:

You can also go to the "more" icon at the top of the task screen and click "Connect a task, doc, and more" and then choose to:

You can also link to other attachments outside of Dart by clicking on:

More > Connect a task, doc, and more > Add attachment

Dart allows you to add outside links as well, for example, to other websites.

To do this, open the task you want to link items to, go to:

More > Connect a task, doc, and more > Add link

Or, type in the shortcut Command + L (on Mac) or ctrl + L (on PC):