<?php
define('IN_CB', true);
include('include/header.php');
$default_value['checksum'] = '';
$checksum = isset($_POST['checksum']) ? $_POST['checksum'] : $default_value['checksum'];
registerImageKey('checksum', $checksum);
registerImageKey('code', 'BCGcode39');
$characters = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%');
?>
<ul id="specificOptions">
<li class="option">
<div class="title">
<label for="checksum">Checksum</label>
</div>
<div class="value">
<?php echo getCheckboxHtml('checksum', $checksum, array('value' => 1)); ?>
</div>
</li>
</ul>
<div id="validCharacters">
<h3>Valid Characters</h3>
<?php foreach ($characters as $character) { echo getButton($character); } ?>
</div>
<div id="explanation">
<h3>Explanation</h3>
<ul>
<li>Known also as USS Code 39, 3 of 9.</li>
<li>Code 39 can encode alphanumeric characters.</li>
<li>The symbology is used in non-retail environment.</li>
<li>Code 39 is designed to encode 26 upper case letters, 10 digits and 7 special characters.</li>
<li>Code 39 has a checksum but it's rarely used.</li>
</ul>
</div>
<?php
include('include/footer.php');
?>
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