This is a demonstration of the Additional Glyphs feature for FlxBitmapFont
var font = new FlxBitmapFont("assets/font.png", 8, 8, FlxBitmapFont.TEXT_SET1);
font.appendGlyphs(FlxAtlasFrames.fromSparrow("assets/images/glyphs.png", "assets/images/glyphs.xml"));
Then, when you want to display a Glyph in your FlxBitmapText
just put {{glyphname}}
in your text
string.