question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 2 ) ; 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 . addElement ( new Option ( "\tInitial structure is empty (instead of Naive Bayes)" , "N" , 0 , "-N" ) ) ; newVector . addAll ( Collections . list ( super . listOptions ( ) ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.