This formatter attempts to format the output as BoostBook format. BoostBook is a derivative of DocBook with full support of C++ constructs, developed by the Boost project for documenting their libraries.
The DocBook 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. The default is to send output to the console (stdout). You do not need to use the special syntax for this option.
Enables verbose operation.