$_> modware-export chado2dictycanonicalgff3 [-?chlopu] [long options...]
	-h -? --usage --help   Prints this usage information.
	--reference_id         reference feature name/ID/accession number. In
	                       this case,  only all of its associated
	                       features will be dumped
	-o --output            Name of the output file,  if absent writes to
	                       STDOUT
	--write_sequence       To write the fasta sequence(s) of reference
	                       feature(s),  default is true
	--attr --attribute     Additional database attribute
	--pass -p --password   database password
	--feature_name         Output feature name instead of sequence id in
	                       the seq_id field,  default is off.
	--dsn                  database DSN
	--schema_debug         Output SQL statements that are executed, 
	                       default to false
	-u --user              database user
	--log_level            Log level of the logger,  default is error
	-l --logfile           Name of logfile,  default goes to STDERR
	-c --configfile        yaml config file to specify all command line
	                       options