question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 4 ) ; newVector . addElement ( new Option ( "\tTabu list length" , "L" , 1 , "-L <integer>" ) ) ; newVector . addElement ( new Option ( "\tNumber of runs" , "U" , 1 , "-U <integer>" ) ) ; newVector . addElement ( new Option ( "\tMaximum number of parents" , "P" , 1 , "-P <nr of parents>" ) ) ; newVector . addElement ( new Option ( "\tUse arc reversal operation.\n\t(default false)" , "R" , 0 , "-R" ) ) ; newVector . addAll ( Collections . list ( super . listOptions ( ) ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.