<?xml version="1.0"?> <!DOCTYPE para PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"> <para> In order to translate public identifiers into local system identifiers, <application>Jade</application> and <application>SP</application> read the catalog files pointed to by <envar>SGML_CATALOG_FILES</envar>. </para>