where @var{I} is an intermediate character or characters in the range
0x20 - 0x3F, and @var{F}, from the range 0x30-0x7Fm is the final
character identifying this charset. (Final characters in the range
-0x30-0x3F are reserved for private use and will never have a publically
+0x30-0x3F are reserved for private use and will never have a publicly
registered meaning.)
Then that register is @dfn{invoked} to either GL or GR, either