The Announcements tool is used to inform site participants about current items of interest. Announcements can have multiple attachments, such as documents or URLs.
To see the Announcements from all the sites to which you belong, in
the menubar of My Workspace, click
Sorting: Announcements can be sorted by subject, sender, access, or date.
Posting: Announcements are posted to a course or project site. Site owners and instructors can choose to have an announcement automatically sent via email to all site participants by using the "required" or "high" notification setting.