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<h1 class="topictitle1">IBM standard
user labels (UHL1-UHL8 or UTL1-UTL8)</h1>
<div><p>The IBM<sup>®</sup> standard
user labels (UHL1-UHL8 or UTL1-UTL8) is 80 bytes in length. The program uses
them to identify additional information about the data set.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="hsides" border="0" rules="none"><caption>Table 1. Format of the IBM standard user
labels (UHL1-UHL8 or UTL1-UTL8)</caption><thead align="left"><tr><th align="left" valign="bottom" width="9.945750452079565%" id="d0e30">Offset</th>
<th align="left" valign="bottom" width="14.285714285714285%" id="d0e32">Data type</th>
<th align="left" valign="bottom" width="12.115732368896925%" id="d0e34">length</th>
<th align="left" valign="bottom" width="63.65280289330922%" id="d0e36">contents</th>
</tr>
</thead>
<tbody><tr><td align="left" valign="top" width="9.945750452079565%" headers="d0e30 ">0</td>
<td align="left" valign="top" width="14.285714285714285%" headers="d0e32 ">Character</td>
<td align="left" valign="top" width="12.115732368896925%" headers="d0e34 ">3</td>
<td align="left" valign="top" width="63.65280289330922%" headers="d0e36 ">Label identifier</td>
</tr>
<tr><td align="left" valign="top" width="9.945750452079565%" headers="d0e30 ">3</td>
<td align="left" valign="top" width="14.285714285714285%" headers="d0e32 ">Character</td>
<td align="left" valign="top" width="12.115732368896925%" headers="d0e34 ">1</td>
<td align="left" valign="top" width="63.65280289330922%" headers="d0e36 ">Label number</td>
</tr>
<tr><td align="left" valign="top" width="9.945750452079565%" headers="d0e30 ">4</td>
<td align="left" valign="top" width="14.285714285714285%" headers="d0e32 ">Character</td>
<td align="left" valign="top" width="12.115732368896925%" headers="d0e34 ">76</td>
<td align="left" valign="top" width="63.65280289330922%" headers="d0e36 ">User data</td>
</tr>
</tbody>
</table>
</div>
<p></p>
<p>All information in the user labels is user data. The user labels directly
follow the header/trailer group and can be up to 8 user labels per data set.</p>
<p>The program describes the contents and function of each of the fields below.</p>
<ul><li>Label identifier <div class="p">The characters identify the type of data set label.
<dl><dt class="dlterm">UHL</dt>
<dd>User Header Label (the beginning of a data set)</dd>
<dt class="dlterm">UTL</dt>
<dd>User Trailer Label (the end of a data set)</dd>
</dl>
</div>
</li>
<li>Label number <p>The relative position of this label within the set of
labels of the same type; there is a limit of 8 user labels per data set.</p>
</li>
<li><span>User data</span> <p>This
field specifies any user information in the user label. The program ignores
the information in this set but passes it to a specified user label program.</p>
</li>
</ul>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="volum.htm" title="This topic describes the volume labels used in the open feedback area.">Volume label fields</a></div>
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