Printing degree ° symbol

Is there a way to print non-ascii chars (like the degree symbol °) using the system fonts, e.g. FONT_SYSTEM_SMALL?
I'm getting a ? in a black diamond, which I assume indicates the character isn't supported.
And is there a font sheet available for the fonts? It's a bit laborious exploring them one-by one.
  • Appendix A of the UX Guide tells you what characters are available in which font on what devices.

    Use UFT-8 here and not the extended ascii, BTW
  • Appendix A of the UX Guide tells you what characters are available in which font on what devices.

    Use UFT-8 here and not the extended ascii, BTW

    Ah, found it, thanks, but.
    What is the syntax for embedding the DEGREE SIGN ((U+00B0) c2b0?) in a text string?
    The doco gives: #utf8ArrayToString(utf8Array), but it doesn't show me how to create an "utf8array"

    AHA!
    StringUtil.utf8ArrayToString([194,176]);

    or, better:
    StringUtil.utf8ArrayToString([0xC2,0xB0]);