doc-base 0.11.1 (s390x binary) in ubuntu lunar

 This package contains utilities to manage documentation installed on
 a Debian system. It generates a database of document metadata, which
 other packages such as dwww, dhelp, dochelp, and doc-central can use
 to provide a catalog of available documentation.
 .
 For additional information see the Debian doc-base Manual included in
 this package.