This formatter attempts to output the AST as a Dia graph. The Dia file format is just XML, so this makes the formatter quite simple.
The Dia formatter does not support any config options yet, however some command line options are still supported. Don't forget to set them using the "-Wf,-foo" syntax!
Specifies an output filename. It should probably end in ".dia". You do not need to use the special syntax for this option.
Enables verbose operation.
Hides the operations/methods in the classes.
Hides the attributes/variables in the classes.
Hides the parameters in the operation/method specifications.