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<h1 class="topictitle1">Conventions and terminology used in the DDS information</h1>
<div><p>The DDS information uses specific phrases and terms to describe
key concepts.</p>
<p>When you read the DDS information in the information center, be aware of
the following conventions:</p>
<ul><li>A <em>keyword</em> is a name that identifies a function.</li>
<li>A <em>parameter</em> is an argument shown between the parentheses on a keyword
that identifies a value or set of values you can use to tailor the function
the keyword specifies.</li>
<li>A <em>value</em> is an actual value that you can use for a parameter.</li>
<li>In the keyword descriptions, <em>this field</em> or <em>this record format</em> means
the field or record format you are defining.</li>
<li>The expression <em>use this file- or record-level keyword</em> means that
the keyword is valid only at the file or record level.</li>
<li><em>To specify a keyword</em> means to code the keyword in the DDS for a
file. This contrasts with <em>to select a keyword</em> or <em>when a keyword
is in effect</em>, which both mean that any conditioning (such as one or more
option indicators) is satisfied when an application program issues an input
or output operation.</li>
<li><em>Current source</em> or <em>source you are defining</em> means the DDS
that together make up the description of one file.</li>
<li>In sample displays, character fields are shown as Xs and numeric fields
are shown as Ns.</li>
<li>The 5250 Work Station Feature is a feature of the OS/2<sup>®</sup> communications manager that allows
the personal computer to perform like a 5250 display station and use functions
of <span class="keyword">i5/OS™</span>.</li>
<li><em>Logical file</em> includes join logical files, simple logical files,
and multiple-format logical files.</li>
<li><em>Page</em> means to move information up or down on the display. <em>Roll</em> means
the same as page. <em>Paging keys</em> are the same as <em>roll keys</em>. The
PAGEDOWN keyword is the same as the ROLLUP keyword. The PAGEUP keyword is
the same as the ROLLDOWN keyword.</li>
<li>Keyword descriptions use the following punctuation marks to indicate the
syntax for the keyword: <dl><dt class="dlterm">()</dt>
<dd>Enclosed values are required.</dd>
<dt class="dlterm">[]</dt>
<dd>Enclosed values are optional.</dd>
<dt class="dlterm">[...]</dt>
<dd>Specify additional values as needed.</dd>
<dt class="dlterm">{}</dt>
<dd>The upper value is the default value.</dd>
<dt class="dlterm">|</dt>
<dd>Specify either the value to the left or to the right (may refer to optional
values).</dd>
</dl>
</li>
</ul>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="coderules.htm" title="When you describe data attributes with DDS, you need to be aware of specific coding rules, naming conventions, and terminology.">DDS coding rules, conventions, and terms</a></div>
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