Configuring <application>DocBook <acronym>SGML</acronym> <acronym>DTD</acronym></application> Config files /etc/sgml/catalog Configuration Information The above installation script updates the catalog. Using only the most current 4.x version of DocBook SGML DTD requires the following: cat >> /usr/share/sgml/docbook/sgml-dtd-&sgml-dtd-version;/catalog << "EOF" -- Begin Single Major Version catalog changes -- PUBLIC "-//OASIS//DTD DocBook V4.2//EN" "docbook.dtd" PUBLIC "-//OASIS//DTD DocBook V4.1//EN" "docbook.dtd" PUBLIC "-//OASIS//DTD DocBook V4.0//EN" "docbook.dtd" -- End Single Major Version catalog changes -- EOF