SYNTAX            : RANGE @X REG

RESULTING ARGUMENT: None

FUNCTION          : Copy all characters in the specified range into the
                    the register immediately following the command.

                    The cursor (and implicitly the value of  . ) is moved
                    to the end of the copied section.

RANGE             : START,END
                    START         : the buffer position to start at
                    END           : the buffer position to stop at

NOTE 1            : The previous content of the register is lost; its type
                    is set to string.

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

MATRIX