to be meaningful.
<!entity biblio SYSTEM "biblio.sgml">
]>
<!-- entity manpages SYSTEM "man/manpages.sgml" subdoc -->
-<Book>
+<Book Id="admin">
<!-- Title information -->
-<Chapter>
+<Chapter Id="advanced">
<Title>Advanced <ProductName>Postgres</ProductName> <Acronym>SQL</Acronym> Features</Title>
<Para>
-<Chapter>
+<Chapter Id="arrays">
<Title>Arrays</Title>
<Para>
-<Chapter>
+<Chapter Id="compiler">
<DocInfo>
<AuthorGroup>
<Author>
-<Chapter>
+<Chapter Id="datatype">
<Title>Data Types</Title>
<Abstract>
-<Chapter>
+<Chapter Id="dfunc">
<Title>Linking Dynamically-Loaded Functions</Title>
<Para>
-<Chapter>
+<Chapter Id="ecpg">
<DocInfo>
<AuthorGroup>
<Author>
-<Chapter>
+<Chapter Id="environ">
<Title>Setting Up Your Environment</Title>
<Para>
-<Chapter>
+<Chapter Id="extend">
<Title>Extending <Acronym>SQL</Acronym>: An Overview</Title>
<Para>
-<Chapter>
+<Chapter Id="func-ref">
<Title>Functions</Title>
<Abstract>
-<Chapter>
+<Chapter Id="gist">
<DocInfo>
<AuthorGroup>
<Author>
-<Chapter>
+<Chapter Id="inherit">
<Title>Inheritance</Title>
<Para>
-<Chapter>
+<Chapter Id="install">
<Title>Installation</Title>
<Abstract>
-<Chapter>
+<Chapter Id="jdbc">
<Title>JDBC Interface</Title>
<Para>
-<Chapter>
+<Chapter Id="libpq">
<Title><FileName>libpq</FileName></Title>
<Para>
-<Chapter>
+<Chapter Id="largeObjects">
<Title>Large Objects</Title>
<Para>
-<Chapter>
+<Chapter Id="manage">
<Title>Managing a Database</Title>
<Para>
-<Chapter>
+<Chapter Id="odbc">
<DocInfo>
<AuthorGroup>
<Author>
-<Chapter>
+<Chapter Id="pgaccess">
<Title><Command>pgaccess</Command></Title>
<Para>
<!entity contacts SYSTEM "contacts.sgml">
]>
<!-- entity manpages SYSTEM "man/manpages.sgml" subdoc -->
-<Book>
+<Book Id="programmer">
<!-- Title information -->
-<Chapter>
+<Chapter Id="protocol">
<DocInfo>
<Author>
<FirstName>Phil</FirstName>
-<Chapter>
+<Chapter Id="psql">
<Title><Command>psql</Command></Title>
<Para>
-<Chapter>
+<Chapter Id="query-ug">
<TITLE>The Query Language</TITLE>
<Para>
-<Chapter ID="QUERY">
+<Chapter ID="query">
<TITLE>The Query Language</TITLE>
<Para>
-<Chapter>
+<Chapter Id="recovery">
<Title>Database Recovery</Title>
<Para>
-<Chapter>
+<Chapter Id="regress">
<Title>Regression Test</Title>
<Abstract>
-<Chapter>
+<Chapter Id="rules">
<Title>The <ProductName>Postgres</ProductName> Rule System</Title>
<Para>
-<Chapter>
+<Chapter Id="spi">
<DocInfo>
<AuthorGroup>
<Author>
- - thomas 1998-02-24
-->
-<Chapter>
+<Chapter Id="start-ag">
<Title>Runtime Environment</Title>
<Para>
</Chapter>
-<Chapter>
+<Chapter Id="postmaster">
<Title>Starting <Application>postmaster</Application></Title>
<Para>
</Para>
</Chapter>
-<Chapter>
+<Chapter Id="newuser">
<Title>Adding and Deleting Users</Title>
<Para>
</Para>
</Chapter>
-<Chapter>
+<Chapter Id="disk">
<Title>Disk Management</Title>
<Para>
</Sect1>
</Chapter>
-<Chapter>
+<Chapter Id="trouble">
<Title>Troubleshooting</Title>
<Para>
</Para>
</Chapter>
-<Chapter>
+<Chapter Id="manage-ag">
<Title>Managing a Database</Title>
<Para>
-<Chapter>
+<Chapter Id="storage">
<Title>Disk Storage</Title>
<Para>
-<Chapter>
+<Chapter Id="triggers">
<Title>Triggers</Title>
<Para>
<!entity advanced SYSTEM "advanced.sgml">
<!entity biblio SYSTEM "biblio.sgml">
]>
-<Book>
+<Book Id="tutorial">
<!-- Title information -->
-<chapter>
+<chapter Id="typeconv">
<title>Type Conversion</title>
<para>
<!entity biblio SYSTEM "biblio.sgml">
]>
<!-- entity manpages SYSTEM "man/manpages.sgml" subdoc -->
-<Book>
+<Book Id="user">
<!-- Title information -->
-<Chapter>
+<Chapter Id="xaggr">
<Title>Extending <Acronym>SQL</Acronym>: Aggregates</Title>
<Para>
-<Chapter>
+<Chapter Id="xfunc">
<Title>Extending <Acronym>SQL</Acronym>: Functions</Title>
<Para>
-<Chapter>
+<Chapter Id="xindex">
<Title>Interfacing Extensions To Indices</Title>
<Para>
-<Chapter>
+<Chapter Id="xoper">
<Title>Extending <Acronym>SQL</Acronym>: Operators</Title>
<Para>
-<Chapter>
+<Chapter Id="xtypes">
<Title>Extending <Acronym>SQL</Acronym>: Types</Title>
<Para>
As previously mentioned, there are two kinds of types