Thank you very much for your help. I guess I'll first try to embed the 'Symbola' font suggested by grannyGrumpy. There seems to be everything I need there. Except the Apple logo that is—for that one I guess I'll have to go with an image...
By the way, I'm not the author of the book, nor the publisher. I'm just the guy helping them to get a decent ePub. And it is a novel about Steve Jobs, so it has to be the Apple logo, not just any apple image... I'll let them worry about copyright and that kind of stuff.
I've done quite a bit of books in ePub but it is the first time I have to embed fonts and worry about unicode. I'm a bit confused and can't seem to find the exact information I'm looking for. Thanks to PoP, I have no the equivalent Unicode code points for almost all the characters I want in the ePub. Now my question, which will seem quite naive, is how exactly do I get the symbols displayed in the ePub?
I embed the fond, tweak my CSS, no problem there, and then in the html file I add the equivalent HTML-code of the Unicode code point? For example, the first trigram:
That's it? Or am I missing something?
Of course I'll test this on a few reader with a test file first.
DomesticExtremis, mrmikel, PoP, grannyGrumpy, thank you very much. Your help is really appreciated.
PS. I couldn't even get the HTML-code for the trigram posted on the forum without being converted to the symbol so I put an image...