question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 4 ) ; newVector . addElement ( new Option ( "\tSets if binary attributes are to be coded as nominal ones." , "N" , 0 , "-N" ) ) ; newVector . addElement ( new Option ( "\tFor each nominal value a new attribute is created, \n" + "\tnot only if there are more than 2 values." , "A" , 0 , "-A" ) ) ; newVector . addElement ( new Option ( "\tSpecifies list of columns to act on. First and last are \n" + "\tvalid indexes.\n" + "\t(default: first-last)" , "R" , 1 , "-R <col1,col2-col4,...>" ) ) ; newVector . addElement ( new Option ( "\tInvert matching sense of column indexes." , "V" , 0 , "-V" ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.