- { long => 'no_stream', short => 'x', type => 'flag', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },
- { long => 'data_out', short => 'o', type => 'file', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },
- { long => 'keys', short => 'k', type => 'list', mandatory => 'yes', default => undef, allowed => undef, disallowed => undef },
+ { long => 'no_stream', short => 'x', type => 'flag', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },
+ { long => 'data_out', short => 'o', type => 'file', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },
+ { long => 'keys', short => 'k', type => 'list', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },
+ { long => 'list', short => 'l', type => 'string', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },