This allows a user to upload files into a course that are larger than
the maximum upload size for the course or activity.
It also ignores the Site Administration limit in the Moodle
Administration->Security->Maximum uploaded file size and instead
uses the Site upload limit which is a value configured in the PHP
settings on the server.
It may be given to a user in a course so that they may upload large
media files in the event that course contents are larger than the
allowed file size in the Moodle settings.