Many functions in System.ocg have proper documentation, but not next to
the code. When changing these functions, it is easy to forget updating
the docs. Nobody likes outdated documentation!
This makes the special effect properties useable without the "this." prefix,
makes the various useful global functions available as well as
effect-specific functions.
The engine (extra)warns whenever you use Par() or ... inside of a
function that is not declared as taking a variable number of arguments.
Change the declaration of all System.ocg varargs functions so it is
immediately obvious.