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<title>system_context</title>
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<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="asio C++ library" width="250" height="60" src="../../asio.png"></td></tr></table>
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<a accesskey="p" href="system_category.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="system_context/add_service.html"><img src="../../next.png" alt="Next"></a>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="asio.reference.system_context"></a><a class="link" href="system_context.html" title="system_context">system_context</a>
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</h3></div></div></div>
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<p>
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<a class="indexterm" name="asio.indexterm.system_context"></a>
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The executor context for the system executor.
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</p>
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<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">system_context</span> <span class="special">:</span>
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<span class="keyword">public</span> <span class="identifier">execution_context</span>
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</pre>
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<h5>
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<a name="asio.reference.system_context.h0"></a>
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<span><a name="asio.reference.system_context.types"></a></span><a class="link" href="system_context.html#asio.reference.system_context.types">Types</a>
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<div class="informaltable"><table class="table">
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Description
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</tr></thead>
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<a class="link" href="system_context/executor_type.html" title="system_context::executor_type"><span class="bold"><strong>executor_type</strong></span></a>
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</p>
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The executor type associated with the context.
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<p>
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<a class="link" href="system_context/fork_event.html" title="system_context::fork_event"><span class="bold"><strong>fork_event</strong></span></a>
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</p>
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</td>
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<td>
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Fork-related event notifications.
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</table></div>
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<h5>
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<a name="asio.reference.system_context.h1"></a>
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<span><a name="asio.reference.system_context.member_functions"></a></span><a class="link" href="system_context.html#asio.reference.system_context.member_functions">Member
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Functions</a>
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</h5>
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<div class="informaltable"><table class="table">
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Description
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<a class="link" href="system_context/get_executor.html" title="system_context::get_executor"><span class="bold"><strong>get_executor</strong></span></a>
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</p>
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<td>
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<p>
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Obtain an executor for the context.
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</p>
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<p>
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<a class="link" href="system_context/join.html" title="system_context::join"><span class="bold"><strong>join</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Join all threads in the system thread pool.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/notify_fork.html" title="system_context::notify_fork"><span class="bold"><strong>notify_fork</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Notify the execution_context of a fork-related event.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/stop.html" title="system_context::stop"><span class="bold"><strong>stop</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Signal all threads in the system thread pool to stop.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/stopped.html" title="system_context::stopped"><span class="bold"><strong>stopped</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Determine whether the system thread pool has been stopped.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/_system_context.html" title="system_context::~system_context"><span class="bold"><strong>~system_context</strong></span></a> <span class="silver">[destructor]</span>
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</p>
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</td>
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<td>
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<p>
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Destructor shuts down all threads in the system thread pool.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<h5>
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<a name="asio.reference.system_context.h2"></a>
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<span><a name="asio.reference.system_context.protected_member_functions"></a></span><a class="link" href="system_context.html#asio.reference.system_context.protected_member_functions">Protected
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Member Functions</a>
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</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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<col>
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<thead><tr>
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<p>
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Name
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</p>
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</th>
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<th>
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<p>
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Description
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</p>
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</tr></thead>
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<p>
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<a class="link" href="system_context/destroy.html" title="system_context::destroy"><span class="bold"><strong>destroy</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Destroys all services in the context.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/shutdown.html" title="system_context::shutdown"><span class="bold"><strong>shutdown</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Shuts down all services in the context.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<h5>
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<a name="asio.reference.system_context.h3"></a>
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<span><a name="asio.reference.system_context.friends"></a></span><a class="link" href="system_context.html#asio.reference.system_context.friends">Friends</a>
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</h5>
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<div class="informaltable"><table class="table">
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<colgroup>
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Name
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Description
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</tr></thead>
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<a class="link" href="system_context/add_service.html" title="system_context::add_service"><span class="bold"><strong>add_service</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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(Deprecated: Use make_service().) Add a service object to the execution_context.
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</p>
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<a class="link" href="system_context/has_service.html" title="system_context::has_service"><span class="bold"><strong>has_service</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Determine if an execution_context contains a specified service
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type.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/make_service.html" title="system_context::make_service"><span class="bold"><strong>make_service</strong></span></a>
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</p>
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<td>
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<p>
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Creates a service object and adds it to the execution_context.
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</p>
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</td>
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<p>
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<a class="link" href="system_context/use_service.html" title="system_context::use_service"><span class="bold"><strong>use_service</strong></span></a>
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</p>
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</td>
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<td>
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<p>
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Obtain the service object corresponding to the given type.
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</p>
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</td>
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</tr>
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</tbody>
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</table></div>
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<h5>
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<a name="asio.reference.system_context.h4"></a>
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<span><a name="asio.reference.system_context.requirements"></a></span><a class="link" href="system_context.html#asio.reference.system_context.requirements">Requirements</a>
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</h5>
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<p>
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<span class="emphasis"><em>Header: </em></span><code class="literal">asio/system_context.hpp</code>
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</p>
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<p>
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<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
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</p>
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</div>
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<div class="copyright-footer">Copyright © 2003-2023 Christopher M. Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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</p>
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</div>
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<hr>
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<div class="spirit-nav">
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<a accesskey="p" href="system_category.html"><img src="../../prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../home.png" alt="Home"></a><a accesskey="n" href="system_context/add_service.html"><img src="../../next.png" alt="Next"></a>
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</body>
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</html>
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