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<h1 class="topictitle1">Offset versus displacement considerations for structures</h1>
<div><p>You will find the terms offset and or displacement in some of the
APIs. For example, the Retrieve Data Queue Message (QMHRDQM) API uses offset;
the List Objects (QUSLOBJ) API uses displacement.</p>
<p>An <em>offset</em> is the distance from the beginning of an object (user
spaces and receiver variables) to the beginning of a particular field. However,
a <em>displacement</em> is the distance from the beginning of a specific record,
block, or structure to the beginning of a particular field.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="conParameter.htm" title="After you have found the API that you want to use, you need to code a call to an API and pass to the API the required set of parameters appropriate for that API.">API parameters</a></div>
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