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 compile a template file into the corresponding PHP script to be run by the Template class.
The important elements of the compiler are the include extends block and superblock directives. They cannot be handled in a linear way like the rest of the elements, they are more like nodes.