This is METAFONT, Version 2.7182 (Web2C 7.3.1) (base=mf 1999.9.25)  30 APR 2000 22:36
**io
(/usr/share/texmf/metafont/base/io.mf
The letter O [79])
*end
Output written on io.2602gf (1 character, 1724 bytes).