Foldrxxx.prg adds xxx folders to the system limit of ~ 40.  Each 
additional folder take 132 bytes of RAM.  Thus FOLDR100.PRG will take
13,200 Bytes of RAM.
To use just change the xxx in the name to the number of additional folders
you want to be able to have and place the program in your AUTO folder.
When you boot your system, you will see a message confirming the number of
additional folders and the amount of RAM used.
This comes from Atari and has been downloaded with their knowledge.
Atari marketing in Germany says that this is the solution to the
40 folder problem and that no other fix is coming in the new ROMs.

Enjoy