Every content item in this list is tagged with all the required labels:

• cancelling
• canvas-differences
• extra-credit
• grade-book
• grading
• label
• migrate
• move
• pass
• unpublished
• zebra

To add a label to the list of required labels, choose '+ labelname' from Related Labels.
To remove a label from the required labels, choose '- labelname' from above.