Every document in the backward-compatible document library has an associated document profile that contains a collection of document properties. Microsoft Office SharePoint Portal Server 2003 uses the information on the document profile to categorize documents and to direct searches once the document is published on the portal site. You use the profile form to supply information about your document, such as its author and title.
As a coordinator at the document library level, you can apply specific document profiles to documents when you add the documents to the document library for the first time. After you design your document library or folder, users can also apply document profiles to their documents when they add them to the document library. The information that users add to the profile form (metadata) is stored with the document.
Users can access the profile form through the Properties page of a specific document. In an enhanced folder, users can also access the profile form from the check-in form.