The recommended font is Helvetica Neue, a clear, crisp and largely accessible typeface, or its free lookalike, TeX Gyre Heros. Helvetica Neue is part of the standard suite of fonts included on Mac computers but is not generally found on Windows machines. It can be purchased from a font foundry (Adobe, Linotype, etc.). TeX Gyre Heros is available from Font Squirrel.

Recommended fallback fonts are Helvetica or Arial.