question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( 4 ) ; newVector . addElement ( new Option ( "\tSpecify list of columns to translate in time. First and\n" + "\tlast are valid indexes. (default none)" , "R" , 1 , "-R <index1,index2-index4,...>" ) ) ; newVector . addElement ( new Option ( "\tInvert matching sense (i.e. calculate for all non-specified columns)" , "V" , 0 , "-V" ) ) ; newVector . addElement ( new Option ( "\tThe number of instances forward to translate values\n" + "\tbetween. A negative number indicates taking values from\n" + "\ta past instance. (default -1)" , "I" , 1 , "-I <num>" ) ) ; newVector . addElement ( new Option ( "\tFor instances at the beginning or end of the dataset where\n" + "\tthe translated values are not known, remove those instances\n" + "\t(default is to use missing values)." , "M" , 0 , "-M" ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.