Changes different heads for various DC fields.

item-metadata.php

<div class="element-set">
    <h2><?php echo html_escape(__($setName)); ?></h2>
    <?php foreach ($elementsInSet as $info): 
        $elementName = $info['elementName'];
        if ($setName == 'Dublin Core') {
            switch($elementName) {
                // Check if $elementName is 'Description'
                case 'Description':
                    $elementName = 'Header'; // Change value of $elementName to 'Header'
                    break;

                // Check if $elementName is 'Relation'
                case 'Relation':
                    $elementName = 'Further Reading'; // Change value to 'Further Reading'
                    break;

                // Check if $elementName is 'Text'
                case 'Text':
                  $elementName = 'Further Reading';
                  break;

                // Leave the default for headings you don't want to change.
                default:
                    $elementName = $elementName;
            }
        }
        $elementRecord = $info['element'];
        if ($info['isShowable']): ?>
    <div id="<?php echo text_to_id(html_escape("$setName $elementName")); ?>" class="element">
        <h3><?php echo html_escape(__($elementName)); ?></h3>
        <?php if ($info['isEmpty']): ?>
            <div class="element-text-empty"><?php echo __($info['emptyText']); ?></div>
        <?php else: ?>
        <?php
        // We need to extract the element set name from the record b/c
        // $setName contains the 'pretty' version of it that may be named differently
        // than the actual element set.
        ?>
        <?php foreach ($info['texts'] as $text): ?>
            <div class="element-text"><?php echo $text; ?></div>
        <?php endforeach; ?>
        <?php endif; ?>
    </div><!-- end element -->
    <?php endif; ?>
    <?php endforeach; ?>
</div><!-- end element-set -->