Package epubcheck: Information

EpubCheck is a tool to validate IDPF Epub files. It can
detect many types of errors in Epub. OCF container
structure, OPF and OPS mark-up, and internal reference
consistency are checked. EpubCheck can be run as a
standalone command-line tool, installed as a web application
or used as a library.

Authors
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  Peter Sorotokin
  Garth Conboy
  Markus Gylling
  Piotr Kula
  Paul Norton