This is a demo of how to use a cookie to auto-collapse a expand element that is expanded by default. The idea is to set up an expand element this is expanded by default, but if a user collapses it once, it will no longer load auto-expanded for that user until the cookie expires.
For example the following expand element should be auto-expanded until it is manually collapsed. After this, the element will remain collapsed when the page is revisited.
[expand title="test" expanded="once" cookiename="my_cookie"]hidden content[/expand]test
hidden content