"Volta with text" snippet needs font correcting

[Valentin Villenave]

Hello everybody,

I don't know who has sent the following snippet, but there seems to be
a bug with fonts in it:

http://lsr.dsi.unimi.it/LSR/Item?u=1&id=317

If the author of the original snippet can correct it, it would be
great; otherwise, anyone can feel free to post the correct input in
this mailinglist thread.

Regards,
Valentin