Quick Introduction
JATS stands for "Journal Article Tag Suite", and is a set of XML schemas used in publishing scientific literature. They are also well known as the "NLM DTDs", and originated at the National Library of Medicine in support of the PubMed Central archive. Recently these schemas have been adopted by NISO as an official standard for trial use.
JATSPack is a packaging format based on the EXPath Packaging System specification. JATSPack provides a well-defined way of packaging customizations and libraries associated with any of the JATS schema. JATSPacks are similar to plug-ins, which can be easily integrated into XML processing systems to provide customizations and enhancements.
This site currently has a core JATS Bundle available for download which is a repackaging of all of the versions and flavors of the DTDs that you can download from the NLM website. Please refer to the description page for an explanation of what it is, and what it is not.

