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

• adding-comments
• adding-graphical-comments
• creating-comments
• creating-graphical-comments
• creating-textual-comments
• element-simulation
• navigating-document
• navigating-published-model
• synchronizing-users
• using-predefined-templates

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.