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  <h2>Overview</h2>
  
  <p>dompdf is an HTML to PDF converter.  At its heart, dompdf is (mostly)
  CSS2.1 compliant HTML layout and rendering engine written in PHP.  It is
  a style-driven renderer: it will download and read external stylesheets,
  inline style tags, and the style attributes of individual HTML elements.  It
  also supports most presentational HTML attributes.</p>
  
  <p>PDF rendering is currently provided either by PDFLib (<a
  href="http://www.pdflib.com">www.pdflib.com</a>) or by a bundled
  version the R&amp;OS CPDF class written by Wayne Munro (<a
  href="http://www.ros.co.nz/pdf/">www.ros.co.nz/pdf</a>).  (Some
  performance related changes have been made to the R&amp;OS class,
  however).  In order to use PDFLib with dompdf, the PDFLib PECL
  extension is required.  Using PDFLib improves performance and reduces
  the memory requirements of dompdf somewhat, while the R&amp;OS CPDF class,
  though slightly slower, eliminates any dependencies on external PDF
  libraries.</p>
  
  <p>dompdf was entered in the <a
  href="http://www.zend.com/php5/contest/contest.php">Zend PHP 5
  Contest</a> and placed 20th overall.</p>
  
  <p>Please note that dompdf works only with PHP 5.  There are no plans for
  a PHP 4 port.  If your web host does not offer PHP 4, I suggest either pestering
  them, or setting up your own PHP 5 box and using it to run dompdf.  Your scripts
  on your web host can redirect PDF requests to your PHP 5 box.</p>
  
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