| Describes a memory mapping like the 0b111111111110 descriptor, but an entire range rather than a single page is mapped. Another 0b11111111100x descriptor must follow this one to denote the (exclusive) end of the address range to map.
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| Describes a memory mapping like the 0b111111111110 descriptor, but an entire range rather than a single page is mapped. Usually, another 0b11111111100x descriptor follows this one to denote the (exclusive) end of the address range to map, but it has been observed that sometimes the range is not explicitly closed, which presumably indicates a single-page mapping.