20.5.3 Understanding Mif2Go support for FrameMaker 8 Unicode
Mif2Go provides improved Unicode processing for FrameMaker version 8, supporting characters in the "astral planes" above Plane 0 (usually called the Basic Multilingual Plane or BMP), such as the characters in Plane 1 (the Supplementary Multilingual Plane or SMP) and Plane 2 (the Supplementary Ideographic Plane or SIP). UTF-8 can encode characters through Plane 31, if any are ever defined; only Planes 0, 1, 2, 14, 15, and 16 are used in the current specification (Version 5.0). Each plane can include 64K characters. Mif2Go produces CJK output using UTF-8, including characters above the BMP, such as Chinese Extension B. Viewing such characters requires a font that shows them; but even if such a font is not present on your system, Mif2Go produces the correct characters.
Mif2Go does not yet support non-Unicode double-byte character sets; see §12.3.3 Specifying character encoding for HTML.
§36.2.5 Saving FrameMaker 8 files as FrameMaker 8 MIF
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