def createArgParser(dataSuffix='dat'):
        """Create default argument parser.

        TODO move this to some kind of app class

        Create default argument parser for the following options:

        -Q, --quiet
        -R, --robustData: options.robustData
        -B, --blockyModel: options.blockyModel
        -l, --lambda: options.lam
        -i, --maxIter: options.maxIter
        --depth: options.depth
        """
        import argparse

        parser = argparse.ArgumentParser(
            description="usage: %prog [options] *." + dataSuffix)
        parser.add_argument("-Q", "--quiet", dest="quiet",
                            action="store_true", default=False,
                            help="Be verbose.")