question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > result = new Vector < Option > ( ) ; result . addElement ( new Option ( "\tThe number of attributes to randomly select.\n" + "\tIf < 1 then percentage, >= 1 absolute number.\n" + "\t(default: 0.5)" , "N" , 1 , "-N <double>" ) ) ; result . addElement ( new Option ( "\tInvert selection - i.e. randomly remove rather than select." , "V" , 0 , "-V" ) ) ; result . addElement ( new Option ( "\tThe seed value.\n" + "\t(default: 1)" , "S" , 1 , "-S <int>" ) ) ; result . addAll ( Collections . list ( super . listOptions ( ) ) ) ; return result . elements ( ) ; }
target:  Returns an enumeration describing the available options.