It is possible that some of you might know the answer to this... but I suspect the answer is that you can't currently do this. If you know this to be true a confirmation and any further information you have would be handy.

As explained at

www.w3.org/TR/MathML2/chapter6.html#chars.BMP-SMP a fair number of quite important unicode symbols for mathematics are in

plane 1/Secondary Multilingual Plane. It is also noted there that "support for these Mathematical Alphanumeric Symbol characters is not likely to be widespread until after public fonts covering the characters adopted for mathematics are available. " If you look at the wikipedia page for the

Mathematical Alphanumeric Symbol you will see that in your browser you can't see a lot of them.

I am particularly interested in Linux text editor and terminal support although news on firefox (linux) and windows support is also useful if you have it. I have done some searching but am somewhat confused and all I seem to find is windows people asking similar questions and getting slightly better but still not that great answers and other confused people. I intend to keep trying to work out what is going on but any information you have is helpful. Maybe you are better at using google than me.

As far as I can make out there is no free font available (for linux? at all??) which has all of the plane 1 Mathematical Alphanumeric Symbols but that the Stix font might well do when it is released

*any time soon* (30 days from 29th Sept in I hope 2009... otherwise this clearly isn't happening). However, being a bit thick on fonts I don't really understand if the Stix fonts will work in Linux (though some sites seem to claim that this is one of the aims of the project). I also can't tell if the entire Mathematical Alphanumeric Symbols is there because the chart loads and then kicks you off with a message about the Beta test (which is long over). Perhaps you beta tested? Or know someone who did?

Now, I understand that I need a font... I assume I also need a text editor/terminal that can display unicode and I have those but will they work directly with plane 1 out the box or am I still then waiting on something?

Thanks :)