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study/Ref-docs/POSIX/susv3/xrat/xbd_chap13.html
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study/Ref-docs/POSIX/susv3/xrat/xbd_chap13.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 -->
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>Rationale</title>
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</head>
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<body>
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<basefont size="3">
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group</font></center>
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<hr size="2" noshade>
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<h3><a name="tag_01_13"></a>Headers</h3>
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<h4><a name="tag_01_13_01"></a>Format of Entries</h4>
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<p>Each header reference page has a common layout of sections describing the interface. This layout is similar to the manual page
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or "man" page format shipped with most UNIX systems, and each header has sections describing the SYNOPSIS and DESCRIPTION. These
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are the two sections that relate to conformance.</p>
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<p>Additional sections are informative, and add considerable information for the application developer. APPLICATION USAGE sections
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provide additional caveats, issues, and recommendations to the developer. RATIONALE sections give additional information on the
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decisions made in defining the interface.</p>
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<p>FUTURE DIRECTIONS sections act as pointers to related work that may impact the interface in the future, and often cautions the
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developer to architect the code to account for a change in this area. Note that a future directions statement should not be taken
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as a commitment to adopt a feature or interface in the future.</p>
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<p>The CHANGE HISTORY section describes when the interface was introduced, and how it has changed.</p>
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<p>Option labels and margin markings in the page can be useful in guiding the application developer.</p>
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<hr size="2" noshade>
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<center><font size="2"><!--footer start-->
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UNIX ® is a registered Trademark of The Open Group.<br>
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POSIX ® is a registered Trademark of The IEEE.<br>
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[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href=
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"../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>
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]</font></center>
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<!--footer end-->
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<hr size="2" noshade>
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</body>
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</html>
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