PHP tags for logged in and logged out users

I'd like to hide particular things in the panel for guests, but my PHP Knowledge is a bit limited, i've searched also in the Vanilla documentation but i had bad luck so far.

Is there somewhere a better documentation or a library of specific php tags for Vanilla?

Lincoln

<?php if(Gdn::Session()->CheckPermission('Garden.SignIn.Allow')) : ?>

<!-- HTML that logged in users will see -->

<?php else : ?>

<!-- HTML that guests will see -->

<?php endif; ?>

keesha

Thank you for your help Lincoln :-)