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<!DOCTYPE concept

  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-7536307B-10B7-5866-8A21-9DA352DF1928" xml:lang="en"><title>Key

length and location</title><shortdesc>This document describes the location and the length of text keys.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>The length of descriptor and numeric keys is implicit in the type. For

text keys, it must be explicitly defined; the length of text keys is set at

construction time.</p>

<p>The location of a key within an array element is defined by the offset

of the key from the beginning of the element. The <codeph>_FOFF</codeph> macro

can be used to define the offset value.</p>

<p>See also:</p>

<ul>

<li id="GUID-647A83B0-7CDD-54C3-A95D-64EAB497F965"><p><xref href="GUID-D057148C-4D11-39D1-859C-695D2176CFDE.dita"><apiname>_FOFF</apiname></xref> </p> </li>

</ul>

</conbody></concept>