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<title>SWI-Prolog 7.1.10 Reference Manual: Section 1.2</title><link rel="home" href="index.html">
<link rel="contents" href="Contents.html">
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<link rel="summary" href="summary.html">
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<h2 id="sec:status"><a id="sec:1.2"><span class="sec-nr">1.2</span> <span class="sec-title">Status 
and releases</span></a></h2>

<a id="sec:status"></a>

<p>This manual describes version 7.1.10 of SWI-Prolog. SWI-Prolog is 
widely considered to be a robust and scalable implementation of the 
Prolog language. It is widely used in education and research. In 
addition, it is in use for <var>24 &times; 7</var> mission critical 
commercial server processes. The site <a class="url" href="http://www.swi-prolog.org">http://www.swi-prolog.org</a> 
is hosted using the SWI-Prolog HTTP server infrastructure. It receives 
approximately 2.3 million hits and serves approximately 300 Gbytes on 
manual data and downloads each month. SWI-Prolog applications range from 
student assignments to commercial applications that count more than one 
million lines of Prolog code.

<p>SWI-Prolog has two development tracks. <em>Stable</em> releases have 
an even <em>minor</em> version number (e.g., 6.2.1) and are released as 
a branch from the development version when the development version is 
considered stable and there is sufficient new functionality to justify a 
stable release. Stable releases often get a few patch updates to deal 
with installation issues or major flaws. A new
<em>Development</em> version is typically released every couple of weeks 
as a snapshot of the public git repository. `Extra editions' of the 
development version may be released after problems that severely 
hindered the user in their progress have been fixed.

<p>Known bugs that are not likely to be fixed soon are described as 
footnotes in this manual.

<p></body></html>