The features defined on the chapter 14. Real-time, 15. Fixed Decimal Numbers, 16. Editting are not implemented.
A Note on DECIMAL operation.
Because the evaluation precision of numeric expressions is higher than that of variables, the result of the following program never be zero on the decimal operation mode.
10 LET A=(1/3)*3 20 PRINT A-(1/3)*3 30 END
(This is true as far as the implementation complies with the standard.)