Unicode table for you
ftrain.com
ftrain.com
I wonder, what's with the parenthesized stuff in "Circled"? Why do the Unicode people think we need individual characters representing "(1)", "1." "(a)", etc.?
By the way, there is a little bug somewhere. I somehow got it into a mode where it would not show me the characters starting at #100. If I clicked ASCII (to get #0) and moved the X100 slider one step to the right, then I got #9100. But sometimes it works.
And so now you have precomposed accented characters and combining diacriticals, presentation forms for arabic characters, precomposed ligatures, double width latin characters (that look better with CJK characters), icons for chess pieces, emoticons and control characters (including several different spaces and newline characters).
Actually supporting all of unicode is a massive undertaking, and if you start using lesser known features of unicode you will find plenty of bugs everywhere.
The sliders at the top are a bit of an odd choice though. And they are not actually times-a-power-of-10, but in fact plus-a-power-of-ten.
1) If you move a slider bar, it resets the lower-valued slider bars. I don't know if this is intended behavior, but to get to the 8100's, I moved the hundred's bar, then the thousands. But this sequence reset the hundreds to 0, which required me to re-move the hundreds slider bar.
2) Is there a way to have the symbols in each cell as images? Because if I don't have a font install with a particular symbol, those cells display the dreaded empty rectangle.