As far as I can tell, 'true' is a symbol built in to the lexer which
generates a NODE_TRUE, which internally evaluates to Qtrue, which is
the singleton instance of TrueClass.

On the other hand, 'TRUE' is a global constant that contains a
reference to the same object of class TrueClass.

So... is there any difference at all between them programmatically, or
could I document TRUE as a synonym for true?

Dave