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

• description
• flyer
• kb-troubleshooting-article
• openstack
• pilot
• project
• ring
• sim
• virtual-machine
• vms
• wp
• wp3

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.