Hello, folks.

I already posted this, but no response.  I have a bit more informations and new 
areas of confusion, so I thought I would try again.

I have a group displaying a number of single character fields which can be 
clicked on to populate other fields.  Essentially a pick list.  One of the 
options is the null set character ( the O with a line through it, U+2205).  I 
have tried to find a cross platform font that displays it on Mac & Win.  I got 
some apparently duff info that Trebuchet would do the trick,  It is OK on Mac, 
but appears as the mystery character box on Win standalone.  

So I did some more digging, and it is listed among the characters displayed by 
unicode Arial MS.  So I set the fonts accordingly and again it works fine on 
Mac, but when I test a build on Windows, I get the mystery box.  This really 
surprised me.  I did wonder whether I might get the NUL symbol appearing as 
letters top left to bottom right (U+2400), but the no such character surprised 
me.

I have never attempted any unicode jiggery pokery - is that what I need to do, 
and if so, any guidance?

Best wishes,

David Glasgow 
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