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>The big problem with this approach is how to encode characters which >were already in the range 0x7F - 0x9F... it might not happen often, >but a bijective mapping (ie reversible) needs to be able to handle >all cases! There are a number of other ranges that might be used. The Unicode Private Use Area (codes E000 - F8FF) is an obvious choice. There's also the "Control Pictures" area 2400-241F which has the remarkable property that given a complete Unicode font the control characters would actually be readable! -- Richard
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