SYNTAX            : Q REG

RESULTING ARGUMENT: The value associated with the specified numeric
                    register.

FUNCTION          : Pass the value of the register whose name immediately
                    follows the command as argument to the next command in
                    the command sequence.

NOTE 1            : An error will be reported if the register specified is
                    not numeric. Uninitialized registers are numeric (0).

7.0:
NOTE 2            : To access the register as an array, a subscript can be
                    used.

MATRIX