Tagging and Prefixing content is a quick and easy way to categorise and highlight the content of content within your site. Users can then use these to quickly filter by similar tags or prefixes.
Tagging when creating content can be done by entering comma separated values into the tag box. Once you have done this you can choose one of these items to be a title prefix should you wish to do so, as seen below.
Once tags are created, they can be seen within the topic list or indeed on the item of content itself. Clicking on any of these will do a search for other items with the same tab or prefix
Restricting their use
Within the admin CP at "System>Settings>Posting" if you click on the tags tab you will see many options which you can change to restrict the use of tags and prefixes to a predefined set, set minimum and maximum lengths and even add a profanity filter
You can also restrict whether or not tags and prefixes can be used within a forum or member group in each forum or groups settings