Chapter 7 Firewall for FortiOS 5.0 : GUI & CLI - What You May Not Know : Object Tagging and Coloring : Tags
  
Tags
The Tag Management menu provides a central location to view, search and manage tags that you created. Tags are keywords or a term that is assigned to a specific configuration that can be used for searching or filtering purposes. With the Tag Management feature you can:
Search to find a specific tag
View where a tag is referenced, for example, a single tag could be referenced in a security policy, predefined signature and application
Go to where the tag is located, for example, a security policy
View how many tags are currently unused
Remove tags.
The Tag Management page also provides a way to easily locate a specific object, such as a security policy, because of how tags work. For example, an SSL VPN security policy is tagged with the keywords SSL VPN, remote, and SSL branch office;
1. From the Tag Management page, enter SSL and the tags for that security policy appear;
2. Select one of the tags and within the Object Usage window, select to go to the SSL VPN security policy.
3. You can view detailed information about what object is using a tag by selecting one of the tags in the rectangular area that contains a grey background. The Object Usage window appears, which displays similar information as when you select a number in the Ref. column.
 
In the Add Tags window, you can select to add existing tags to the security policy or address list; however, these tags belong to predefined signatures and applications as well as to other security policies and address lists so the tags may not be applicable. You should make sure that the tag is valid for its use when applied to a security policy or other object otherwise it becomes redundant.