Where is Xen:Map in PHP?

[Snog]

I admit I must be blind, but I can't find where xen:map takes place in any of the php files. Where is it?

To be more specific, xen:map from="$message" to="$user" is what I'm looking for.

 

[Chris D]

It's a child tag belonging to <xen:include> so it will be inside "XenForo_Template_Compiler_Tag_Include".

 

[Snog]

Thanks!

Like I said, I'm blind.