question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 3 ) ; newVector . addElement ( new Option ( "\tSets the attribute index." , "C" , 1 , "-C <col>" ) ) ; newVector . addElement ( new Option ( "\tSpecify the list of values to indicate. First and last are\n" + "\tvalid indexes (default last)" , "V" , 1 , "-V <index1,index2-index4,...>" ) ) ; newVector . addElement ( new Option ( "\tSet if new boolean attribute nominal." , "N" , 0 , "-N <index>" ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.