modes.add_argument('--transparency','-t',dest='mode',action='store_const',const="transparency",default="none",help="Generate a list of files that fail the transparency check")
modes.add_argument('--format','-f',dest='mode',action='store_const',const="format",default="none",help="Generate a list of files that fail the format check")
parser.add_argument('--convertcmd',type=str,metavar='CMD',default="convert",help="name of imagemagick's convert tool (default: %(default)s)")
parser.add_argument('--infocmd',type=str,metavar='CMD',default="nvddsinfo",help="name of the nvidia dds info tool (default: %(default)s)")
parser.add_argument('--convertcmd',type=str,metavar='CMD',default=dds.convertcmd,help="name of imagemagick's convert tool (default: %(default)s)")
parser.add_argument('--infocmd',type=str,metavar='CMD',default=dds.infocmd,help="name of the nvidia dds info tool (default: %(default)s)")
parser.add_argument('--decompresscmd',type=str,metavar='CMD',default="nvdecompress",help="name of the nvidia dds decompress tool (default: %(default)s)")
parser.add_argument('--decompresscmd',type=str,metavar='CMD',default=dds.decompresscmd,help="name of the nvidia dds decompress tool (default: %(default)s)")