local root = { { action = '=', fun = 'equal' }, { action = '+', fun = 'add' }, { action = '-', fun = 'subtract' }, { action = 'max', fun = 'max' }, { action = 'min', fun = 'min' }, { action = 'weightNum', fun = 'weightNum' }, { action = 'weight', fun = 'weight' } } return root