<s>
Roméo	O
is	O
an	O
integrated	O
tool	O
environment	B-Device
for	O
modeling	B-Application
,	O
validation	O
and	O
verification	O
of	O
real-time	B-General_Concept
systems	I-General_Concept
modeled	O
as	O
time	O
Petri	O
Nets	O
or	O
stopwatch	O
Petri	O
Nets	O
,	O
extended	O
with	O
parameters	O
.	O
</s>
<s>
The	O
tool	O
has	O
been	O
developed	O
by	O
the	O
Real-Time	B-General_Concept
Systems	I-General_Concept
group	O
at	O
LS2N	O
lab	O
( École	O
centrale	O
de	O
Nantes	O
,	O
University	O
of	O
Nantes	O
,	O
CNRS	O
)	O
in	O
Nantes	O
,	O
France	O
.	O
</s>
