Install libsgml-parser-opensp-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libsgml-parser-opensp-perl
Description:
OpenSP Parser of SGML documents
SGML::Parser::OpenSP provides an interface to the OpenSP SGML parser. OpenSP and this module are event based. As the parser recognizes parts of the document (say the start or end of an element), then any handlers registered for that type of an event are called with suitable parameters.
Homepage: https://metacpan.org/release/SGML-Parser-OpenSP
Version: 0.994-3build4
Section: universe/perl