-casts << {:long=>'directory', :short=>'d', :type=>'dir', :mandatory=>true, :default=>nil, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'scaffold', :short=>'s', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'kmer_min', :short=>'k', :type=>'uint', :mandatory=>false, :default=>25, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'kmer_max', :short=>'K', :type=>'uint', :mandatory=>false, :default=>50, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'count_min', :short=>'c', :type=>'uint', :mandatory=>false, :default=>2, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'cover', :short=>'C', :type=>'uint', :mandatory=>false, :default=>0, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'pairs_min', :short=>'p', :type=>'uint', :mandatory=>false, :default=>5, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'prefix_len', :short=>'P', :type=>'uint', :mandatory=>false, :default=>3, :allowed=>nil, :disallowed=>nil}
-casts << {:long=>'clean', :short=>'x', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'directory', :short=>'d', :type=>'dir', :mandatory=>true, :default=>nil, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'kmer_min', :short=>'k', :type=>'uint', :mandatory=>false, :default=>20, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'kmer_max', :short=>'K', :type=>'uint', :mandatory=>false, :default=>100, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'count_min', :short=>'c', :type=>'uint', :mandatory=>false, :default=>2, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'pairs_min', :short=>'p', :type=>'uint', :mandatory=>false, :default=>3, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'prefix_len', :short=>'P', :type=>'uint', :mandatory=>false, :default=>3, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'cpus', :short=>'C', :type=>'uint', :mandatory=>false, :default=>0, :allowed=>nil, :disallowed=>nil}
+casts << {:long=>'clean', :short=>'X', :type=>'flag', :mandatory=>false, :default=>nil, :allowed=>nil, :disallowed=>nil}