• Allow discussion—This property lets this document be discussed by users who have the right to do so. If left in default, it will use the site wide policy (with is to not allow discussion).
• Keywords—Keywords are a way of assigning metadata to a document. Use control+click (for Windows, command+click for Apple) to select multiple keywords from the list. If you have the proper permission, you can add new keywords.
• Effective Date and Expiration Date—The effective date is the first day a document should be made available and the expiration date is the last day. Searches and navigation only show documents within this date range. Leaving these items blank makes a document immediately and indefinitely available.
• Format—The MIME-type of the document. If you don't know what this is, just leave it at the default.
• Language—The language in which the item is written.
• Copyright—Copyright information for the object, if it is different from the LiveModern copyright notice.
• Contributors—The names of the people who contributed to the document. Each person's name should be on its own line.

Note that all of these properties are optional. Often the default properties are satisfactory.