opensp 1.5.2-13ubuntu3 (arm64 binary) in ubuntu groovy

 This package is a collection of SGML/XML tools called OpenSP.
 It is a fork from James Clark's SP suite.
 .
 These tools are used to parse, validate, and normalize SGML and XML
 files. The central programs included in this package are 'onsgmls',
 which replaces sgmls, 'ospam', 'ospent', 'osgmlnorm', and 'osx'.