<s>
CHIP	B-Application
(	O
Constraint	O
Handling	O
in	O
Prolog	B-Language
)	O
is	O
a	O
constraint	B-Application
logic	I-Application
programming	I-Application
language	O
developed	O
by	O
M	O
.	O
Dincbas	O
,	O
Pascal	O
Van	O
Hentenryck	O
and	O
colleagues	O
in	O
1985	O
at	O
the	O
European	O
Computer-Industry	O
Research	O
Centre	O
(	O
ECRC	O
)	O
,	O
initially	O
using	O
a	O
Prolog	B-Language
language	I-Language
interface	O
.	O
</s>
<s>
CHIP	B-Application
V5	O
is	O
the	O
version	O
developed	O
and	O
marketed	O
by	O
COSYTEC	O
in	O
Paris	O
since	O
1993	O
with	O
Prolog	B-Language
,	O
using	O
C	B-Language
,	O
C++	B-Language
,	O
or	O
Prolog	B-Language
language	I-Language
interfaces	O
.	O
</s>
<s>
The	O
commercially	O
successful	O
ILOG	O
Solver	O
is	O
also	O
,	O
partly	O
,	O
an	O
offshoot	O
of	O
ECRC	O
version	O
of	O
CHIP	B-Application
.	O
</s>
