$_usedModifiers
$_usedModifiers :
After the compilation is completed, this contains the list of modifiers used in the template.
The GetCompiledTemplate method will add a series of Pluf::loadFunction at the top to preload these modifiers.
Class to extract the translation strings from the template.
Based on Pluf_Template_Compiler with code: Copyright (C) 2006 Laurent Jouanneau.