Make sure that any font you use to display the character has an associated glyph for this code point. Not all fonts have glyphs for all Unicode codes. The console, for example, has a relatively small set of glyphs, while Arial Unicode has glyphs for many specific Unicode codes. You can use the Character Map utility in Windows to make sure your font has a glyph for the code point in question. Fonts that do not have an associated glyph may not show anything at all, a box with an X in it, a black diamond with ? built into it (Firefox does this, I think) ? or even ?? .
NTN.
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