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</head>
<!--
Filter and backend programming header for CUPS.
- Copyright 2008-2016 by Apple Inc.
+ Copyright © 2008-2016 by Apple Inc.
- These coded instructions, statements, and computer programs are the
- property of Apple Inc. and are protected by Federal copyright
- law. Distribution and use rights are outlined in the file "LICENSE.txt"
- which should have been included with this file. If this file is
- file is missing or damaged, see the license at "http://www.cups.org/".
+ Licensed under Apache License v2.0. See the file "LICENSE" for more
+ information.
-->
<h1 class='title'>Filter and Backend Programming</h1>
<!--
Filter and backend programming introduction for CUPS.
- Copyright 2007-2016 by Apple Inc.
- Copyright 1997-2006 by Easy Software Products, all rights reserved.
+ Copyright © 2007-2016 by Apple Inc.
+ Copyright © 1997-2006 by Easy Software Products, all rights reserved.
- These coded instructions, statements, and computer programs are the
- property of Apple Inc. and are protected by Federal copyright
- law. Distribution and use rights are outlined in the file "LICENSE.txt"
- which should have been included with this file. If this file is
- file is missing or damaged, see the license at "http://www.cups.org/".
+ Licensed under Apache License v2.0. See the file "LICENSE" for more
+ information.
-->
<h2 class='title'><a name="OVERVIEW">Overview</a></h2>
</ol>
-<blockquote><b>Note:</b> The sandbox profile used in CUPS 2.0 still allows some actions that are not listed above - these privileges will be removed over time until the profile matches the list above.</blockquote>
+<blockquote><b>Note:</b>
+
+<p>The sandbox profile used in CUPS still allows some actions that are not listed above - these privileges will be removed over time until the profile matches the list above.</p>
+</blockquote>
<h2 class="title"><a id="FUNCTIONS">Functions</a></h2>
<h3 class="function"><span class="info"> CUPS 1.2/macOS 10.5 </span><a id="cupsBackChannelRead">cupsBackChannelRead</a></h3>
<p class="description">Read data from the backchannel.</p>