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 3.x version of DocBook SGML DTD requires the following: cat >> /usr/share/sgml/docbook/sgml-dtd-&sgml-dtd-3-version;/catalog << "EOF" -- Begin Single Major Version catalog changes -- PUBLIC "-//Davenport//DTD DocBook V3.0//EN" "docbook.dtd" -- End Single Major Version catalog changes -- EOF