After adding all the headers and content to the page,
you want to get the page to the user.
display()
directly echoes the page to the browser.
If you want to do something with the result page before pushing it
to the browser, use
toHtml()
. It returns the page as string that can be modified further.
<?php
//push it to the browser
$page->display();
//or put it into a variable
$html = $page->toHtml();
?>
