<< obj (type?) data_conversion type >> << obj (type??) data_conversion type >> << obj (key word) data_conversion obj >> integer type; object obj; Key words: null, integer, literal, dollar, string, poly, universalNumber, ring, numerator, denominator, double, cancel, map, orderMatrix, error, or [(class) (class-name)]. The primitive reports and converts the data type of obj. Special combinations of obj and keyword. ring (oxRingStructure) data_conversion list Example: (2) (integer) data_conversion ===> 2