A tag is like a keyword or category label attached to a file in File Exchange. Tags make it easier to find or recall particular files of interest. They're also a good way to categorize your bookmarked items, so you can browse your bookmarks by subject.
Tags benefit the community, too. Anyone who is logged in can tag a File Exchange item. You can view only your own tags, or tags applied by everyone. This means that tagging provides a way to see the big trends in File Exchange content, or your own unique view.
Your tags are public-anyone can view them on your Community Profile page. This gives community members some insight into your interests, and makes it easier for community members to collaborate or exchange ideas.
A good tag helps people find the file. When you tag a file, think about how you might search for that file in the future. Try tagging a file with several relevant terms, even if they're unrelated to one another. For example, you might want search for a file using either "video" or "image processing" as the tag search term, so it's a good idea to apply both of those tags. Go ahead and experiment with tag searches — it's the best way to learn what tagging is all about. Try adding and deleting tags, too.
Start typing in the Tag box, or click on a tag from the list that displays near the box. If you change your mind, click again to remove the tag from your list. Tags are separated by commas. If you want to apply a tag that uses more than one word, make sure there are no commas in the tag itself. Otherwise, the tag will be divided up into multiple tags. Note that when you search for a multi-word tag, you must enclose it in quotes.
You can add a tag to an existing file on the View File page. Scroll down to the Tags for this File heading. Click on Add Tags link and type a new tag.