<s>
PYTHIA	B-Language
is	O
a	O
computer	O
simulation	O
program	O
for	O
particle	O
collisions	O
at	O
very	O
high	O
energies	O
(	O
see	O
event	O
(	O
particle	O
physics	O
)	O
)	O
in	O
particle	O
accelerators	O
.	O
</s>
<s>
PYTHIA	B-Language
was	O
originally	O
written	O
in	O
FORTRAN	O
77	O
,	O
until	O
the	O
2007	O
release	O
of	O
PYTHIA	B-Language
8.1	O
which	O
was	O
rewritten	O
in	O
C++	O
.	O
</s>
<s>
PYTHIA	B-Language
is	O
developed	O
and	O
maintained	O
by	O
an	O
international	O
collaboration	O
of	O
physicists	O
,	O
consisting	O
of	O
Christian	O
Bierlich	O
,	O
Nishita	O
Desai	O
,	O
Leif	O
Gellersen	O
,	O
Ilkka	O
Helenius	O
,	O
Philip	O
Ilten	O
,	O
Leif	O
Lönnblad	O
,	O
Stephen	O
Mrenna	O
,	O
Stefan	O
Prestel	O
,	O
Christian	O
Preuss	O
,	O
Torbjörn	O
Sjöstrand	O
,	O
Peter	O
Skands	O
,	O
Marius	O
Utheim	O
and	O
Rob	O
Verheyen	O
.	O
</s>
<s>
The	O
following	O
is	O
a	O
list	O
of	O
some	O
of	O
the	O
features	O
PYTHIA	B-Language
is	O
capable	O
of	O
simulating	O
:	O
</s>
