<s>
OBJ	B-Application
is	O
a	O
programming	O
language	O
family	O
introduced	O
by	O
Joseph	O
Goguen	O
in	O
1976	O
,	O
and	O
further	O
worked	O
on	O
by	O
Jose	O
Meseguer	O
.	O
</s>
<s>
It	O
is	O
a	O
family	O
of	O
declarative	B-Language
"	O
ultra	O
high-level	O
"	O
languages	O
.	O
</s>
<s>
It	O
features	O
abstract	O
types	O
,	O
generic	O
modules	O
,	O
subsorts	O
(	O
subtypes	O
with	O
multiple	B-Application
inheritance	I-Application
)	O
,	O
pattern-matching	B-Language
modulo	O
equations	O
,	O
E-strategies	O
(	O
user	O
control	O
over	O
laziness	O
)	O
,	O
module	O
expressions	O
(	O
for	O
combining	O
modules	O
)	O
,	O
theories	O
and	O
views	O
(	O
for	O
describing	O
module	O
interfaces	O
)	O
for	O
the	O
massively	O
parallel	O
RRM	O
(	O
rewrite	O
rule	O
machine	O
)	O
.	O
</s>
<s>
Members	O
of	O
the	O
OBJ	B-Application
family	O
of	O
languages	O
include	O
CafeOBJ	O
,	O
Eqlog	O
,	O
FOOPS	O
,	O
Kumo	O
,	O
Maude	B-Language
,	O
OBJ2	O
,	O
and	O
OBJ3	O
.	O
</s>
<s>
OBJ3	O
is	O
a	O
version	O
of	O
OBJ	B-Application
based	O
on	O
order-sorted	O
rewriting	O
.	O
</s>
<s>
OBJ3	O
is	O
agent-oriented	O
and	O
runs	O
on	O
Kyoto	B-Language
Common	I-Language
Lisp	I-Language
AKCL	B-Language
.	O
</s>
