I'm trying to find out an answer to what might seem trivial, but need some help.
How do you know what is referable by, for example $this->product->this_reference_here
Is there a list of variables that are made available, or a way of printing the contents and knowing what I can use.
use in your layout vmdebug('my vars',$this); and enable debug in the config
There are category and product variables listed in the stickies here
http://forum.virtuemart.net/index.php?board=130.0