1. Save the session with a name.
2. View all saved session.
3. Select to re-open the URLs for that session.
1. Save Multiple Sessions.
2. Update an already saved session with new links....
3. Overwrite the already saved session with totally new links.
4. Delete an already saved session.
How many more ways you can use this add-on is left to imagination. One thing I would like to do though is to export the session from Firefox to IE seamlessly with one click !!