Creating a font with just a few characters
<p>Not even sure how to phrase the subject line properly, but what I want to do is this:</p>

<p>I want to use a few special characters in my app, e.g. x̄, which are not in the system's built-in font.</p>

<p>I could simply define my own ttf font with the specific characters in it, but I'd like the system font to be used for everything else.</p>

<p>Is there a way to specify a "fail-over" font?</p>
