Coding in Cascade
Cascade Code Sections
Passthrough is useful for server side languages, where the output will not render in Cascade. Anything put in a passthrough tag will be skipped until published.
<!--#passthrough<?php echo "<Hello World>" ?>#passthrough-->
You can also use passthrough-top to get the code to get written at the top of the document, which can be helpful for ASP pages with code behind calls.
<!--#passthrough-top <?php echo "<Hello World>" ?> #passthrough-top-->
For more information, see Hannon Hill's Code Sections Page.