As far as I am aware, this is a world first, a live-CD that
saves back to the CD at the end of the session. So how does it work? "Boot the PC with the multi-session CD inserted in the CD-burner drive -- thus, Puppy automatically knows which drive is the CD-burner, in case you have more than one CD/DVD drive. Then you use Puppy in the normal way. At shutdown, all the changed files in your home directory are saved back to CD. That's it. Next time you boot, all the personal files are restored."