Remember knoppix.sh ? The old Wiki is full of talk of how this can be used to customise Knoppix start up by the back door. Until someone wrote in there that is didn't work with Knoppix 6.0.1.
Perhaps it didn't but it does work with Knoppix 6.4.3 and 6.4.4. The snag is that in the simpler world of Knoppix 6, knoppix.sh has to be in the same directory as KNOPPIX and knoppix-data.img. If you're running from CD or DVD, you can't have a knoppix.sh any more than you can have a knoppix-data.img.
Since the knoppix_home= cheat code allows you to put knoppix-data.img somewhere else so that you can have a persistent store even when running from CD or DVD, it seems only fair that you can put knoppix.sh there too and expect it to work. This is what the final patch implements.