As described by jpeps here, https://oldforum.puppylinux.com/viewtop ... 73#p598673 "Finds current files for an installed Pet, and makes a new version in /tmp. Leave "new version" box blank for straight duplication, or edit to update name. Batch mode builds multiple pets."
An invaluable tool for upgrading your operating system, or transferring applications you installed in one Puppy into another. Too valuable to be lost and forgotten.