While writing in wiki, you may find it useful to add metadata or tags. As simple way to do this is to create a standard wiki link to the name of the keyword or tag. That is to say wiki-links are keywords.
However to uniquely find these tags the Grep Plugin needs to know what to look for. The markup we find most useful is to include a reference link to a Tags page, and then in the body of the tag description include the wiki-linked tags.
Here is an example:
For convenience any of these will also work: