In the .tpl file, I don't really know for what is the "<![CDATA[ " tag. I'm mixed, I'm not really sure if it's used for not taking into account the xml code or the oppositte...to take it into account, for example in my .tpl file (see below) you will see how I used and works but don't really knwo why only used for the image.
<?xml version="1.0" encoding="UTF-8"?>
<iw_pt name="Book Information">
<html>
<head>
<![CDATA[
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
]]>
</head>
<body bgcolor ="#FFFFFF"
link ="#0033CC"
vlink ="#0033CC"
alink ="0000FF"
text ="#000000">
<center>
<table width='600' cellspacing='0' border='2' bgcolor='#00AA99'>
<tr>
<td colspan='2'>
<center><font size='+1'><b>Book Details</b></font></center>
<![CDATA[<p>]]>
</td>
</tr>
<tr>
<td valign='top'>
<table>
<tr>
<td align='right'><b>Title</b></td>
<td><b>:</b></td>
<td><iw_value name='dcr.Titulo'/> (<iw_value name='dcr.Cover'/>)</td>
</tr>
<tr>
<td align='right'><b>Author</b></td>
<td><b>:</b></td>
<td><iw_value name='dcr.Autor'/></td>
</tr>
</table>
</td>
<td align='center'>
<![CDATA[<img src=']]><iw_value name='dcr.Imagen'/><![CDATA['>]]>
</td>
</tr>
</table>
</center>
</body>
</html>
</iw_pt>
