This is where you add and edit Media Types, also known as MIME types.

Search
  Searches Media Types by name. Do a blank search to list all Media Types or click a letter for an alphabetical list.
Add a New Media Type
  Click this link to create a new Media Type. It brings you to the Media Type Profile page.
Existing Media Types
  Click Edit to modify a Media Type's profile. Click Log to view its event history. To delete a Media Type, check the Delete box, scroll to the bottom of the page and click the Delete Checked button.