This git repository, hosted at https://github.com/gbv/pica-patch contains the specification of PICA Patch format, published at https://format.gbv.de/pica/patch/specification.
ppp2norm.pl- convert from PICA Patch Plain to PICA Patch Normalized (no dependencies)ppp4cbs.pl- checks PICA Patch records to be applied in CBS database (dependencies incpanfile).