<s>
Within	O
the	O
fields	O
of	O
computer	B-General_Concept
science	I-General_Concept
and	O
robotics	O
,	O
interaction	B-Language
protocols	I-Language
are	O
possible	O
communication	O
scenarios	O
between	O
individual	O
agents	O
in	O
multi-agent	O
systems	O
.	O
</s>
<s>
Some	O
protocols	O
are	O
described	O
quite	O
qualitatively	O
(	O
for	O
example	O
,	O
many	O
parts	O
of	O
the	O
traffic	O
code	O
)	O
,	O
but	O
others	O
have	O
a	O
formal	O
model	O
,	O
whose	O
implementations	O
can	O
be	O
tested	O
for	O
conformance	O
(	O
for	O
example	O
,	O
some	O
cryptographic	B-Protocol
protocols	I-Protocol
)	O
.	O
</s>
<s>
FIPA	O
defines	O
markup	O
for	O
interaction	B-Language
protocol	I-Language
diagrams	O
and	O
several	O
standard	O
interaction	B-Language
protocols	I-Language
,	O
including	O
Dutch	O
auction	O
,	O
English	O
auction	O
and	O
reply-response	O
.	O
</s>
