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<H1><A NAME="sec:1"><SPAN class="sec-nr">1</SPAN> <SPAN class="sec-title">Introduction</SPAN></A></H1>

<A NAME="sec:intro"></A>

<P>
<HR>
<CENTER>

<H2>Section Index</H2>

</CENTER>
<HR>
<DIV class="toc">
<DIV class="toc-h2"><A class="sec" href="swiprolog.html"><SPAN class="sec-nr">1.1</SPAN> <SPAN class="sec-title">SWI-Prolog</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="swiprolog.html#sec:1.1.1"><SPAN class="sec-nr">1.1.1</SPAN> <SPAN class="sec-title">Books 
about Prolog</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="status.html"><SPAN class="sec-nr">1.2</SPAN> <SPAN class="sec-title">Status</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="iso.html"><SPAN class="sec-nr">1.3</SPAN> <SPAN class="sec-title">Compliance 
to the ISO standard</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="swiorother.html"><SPAN class="sec-nr">1.4</SPAN> <SPAN class="sec-title">Should 
you be using SWI-Prolog?</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="xpce.html"><SPAN class="sec-nr">1.5</SPAN> <SPAN class="sec-title">The 
XPCE GUI system for Prolog</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="relnotes.html"><SPAN class="sec-nr">1.6</SPAN> <SPAN class="sec-title">Release 
Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.1"><SPAN class="sec-nr">1.6.1</SPAN> <SPAN class="sec-title">Version 
1.8 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.2"><SPAN class="sec-nr">1.6.2</SPAN> <SPAN class="sec-title">Version 
1.9 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.3"><SPAN class="sec-nr">1.6.3</SPAN> <SPAN class="sec-title">Version 
2.0 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.4"><SPAN class="sec-nr">1.6.4</SPAN> <SPAN class="sec-title">Version 
2.5 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.5"><SPAN class="sec-nr">1.6.5</SPAN> <SPAN class="sec-title">Version 
2.6 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.6"><SPAN class="sec-nr">1.6.6</SPAN> <SPAN class="sec-title">Version 
2.7 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.7"><SPAN class="sec-nr">1.6.7</SPAN> <SPAN class="sec-title">Version 
2.8 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.8"><SPAN class="sec-nr">1.6.8</SPAN> <SPAN class="sec-title">Version 
2.9 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.9"><SPAN class="sec-nr">1.6.9</SPAN> <SPAN class="sec-title">Version 
3.0 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.10"><SPAN class="sec-nr">1.6.10</SPAN> <SPAN class="sec-title">Version 
3.1 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.11"><SPAN class="sec-nr">1.6.11</SPAN> <SPAN class="sec-title">Version 
3.3 Release Notes</SPAN></A></DIV>
<DIV class="toc-h4"><A class="sec" href="relnotes.html#sec:1.6.11.1"><SPAN class="sec-nr">1.6.11.1</SPAN> <SPAN class="sec-title">Incompatible 
changes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.12"><SPAN class="sec-nr">1.6.12</SPAN> <SPAN class="sec-title">Version 
3.4 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.13"><SPAN class="sec-nr">1.6.13</SPAN> <SPAN class="sec-title">Version 
4.0 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.14"><SPAN class="sec-nr">1.6.14</SPAN> <SPAN class="sec-title">Version 
5.0 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.15"><SPAN class="sec-nr">1.6.15</SPAN> <SPAN class="sec-title">Version 
5.1 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.16"><SPAN class="sec-nr">1.6.16</SPAN> <SPAN class="sec-title">Version 
5.2 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.17"><SPAN class="sec-nr">1.6.17</SPAN> <SPAN class="sec-title">Version 
5.3 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.18"><SPAN class="sec-nr">1.6.18</SPAN> <SPAN class="sec-title">Version 
5.4 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.19"><SPAN class="sec-nr">1.6.19</SPAN> <SPAN class="sec-title">Version 
5.5 Release Notes</SPAN></A></DIV>
<DIV class="toc-h3"><A class="sec" href="relnotes.html#sec:1.6.20"><SPAN class="sec-nr">1.6.20</SPAN> <SPAN class="sec-title">Version 
5.6 Release Notes</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="sponsor.html"><SPAN class="sec-nr">1.7</SPAN> <SPAN class="sec-title">Donate 
to the SWI-Prolog project</SPAN></A></DIV>
<DIV class="toc-h2"><A class="sec" href="acknowledge.html"><SPAN class="sec-nr">1.8</SPAN> <SPAN class="sec-title">Acknowledgements</SPAN></A></DIV>
</DIV>
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