https://bugs.winehq.org/show_bug.cgi?id=39297
--- Comment #10 from Hin-Tak Leung htl10@users.sourceforge.net --- (In reply to Dmitry Timoshkov from comment #9)
http://www.unicode.org/Public/MAPPINGS doesn't have a ready to use mapping for code page 708, however according to http://coq.no/character-tables/dos/en: "This encoding is an almost compatible superset of ISO 8859/6 (all Arabic letters in the same positions, only one incompatible assignment, adding line-drawing characters and lowercase French accented lowercase vowels)". So, codepage 28596 (ISO 89-6 Arabic) probably could be used and an alias/ replacement.
"almost compatible superset" is a gross understatement and misdirection. I found 28 code point differences and 45 additions out of 256. Depends on how you count it, 28 (10%) or 73 (30%) incompatible is not "almost" compatible. "Almost compatible" is a joke.