[template parser] Trigger Template Include

Imported From: http://groups.google.com/group/in-portal-dev/browse_thread/thread/4b82ff5a87b387ad#

Hi guys,

in one of my templates, I include element from another template into main template.

How could I trigger these external elements, using "if" statement, to include them or not, depending on which template I call them from?

Thanks,
Phil