<s>
IBM	B-Language
Open	I-Language
Class	I-Language
(	O
IOC	O
)	O
is	O
an	O
IBM	O
C++	B-Language
product	O
originally	O
developed	O
by	O
Kevin	O
Leong	O
and	O
originally	O
known	O
under	O
several	O
names	O
in	O
the	O
C++	B-Language
industry	O
,	O
including	O
ICL	O
(	O
IBM	O
Class	O
Library	O
)	O
,	O
UICL	O
(	O
User	O
Interface	O
Class	O
Library	O
)	O
,	O
and	O
OCL	O
(	O
Open	O
Class	O
Library	O
)	O
.	O
</s>
<s>
IOC	O
was	O
an	O
extensive	O
set	O
of	O
C++	B-Language
classes	O
used	O
to	O
build	O
CLI	B-Application
and	O
GUI	B-Application
applications	O
which	O
could	O
then	O
be	O
easily	O
cross-compiled	O
to	O
OS/2	B-Application
,	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
AIX	B-Application
.	O
</s>
<s>
IOC	O
also	O
formed	O
the	O
basis	O
for	O
IBM	O
's	O
VisualAge	B-Language
for	I-Language
C++	I-Language
graphical	O
application	O
builder	O
.	O
</s>
<s>
The	O
non-GUI	O
portions	O
of	O
IOC	O
were	O
available	O
for	O
z/OS	B-Application
and	O
OS/400	B-Application
.	O
</s>
<s>
The	O
IOC	O
was	O
included	O
as	O
part	O
of	O
IBM	O
's	O
C++	B-Language
compiler	O
environment	O
.	O
</s>
<s>
Initially	O
only	O
available	O
for	O
OS/2	B-Application
,	O
the	O
IOC	O
was	O
eventually	O
made	O
available	O
for	O
Windows	O
,	O
AIX	B-Application
,	O
z/OS	B-Application
,	O
and	O
OS/400	B-Application
.	O
</s>
<s>
Support	O
for	O
the	O
OS/2	B-Application
and	O
Windows	O
VisualAge	B-Language
for	I-Language
C++	I-Language
compiler	O
—	O
as	O
well	O
as	O
the	O
accompanying	O
IOC	O
—	O
was	O
officially	O
withdrawn	O
by	O
IBM	O
on	O
April	O
27	O
,	O
2001	O
.	O
</s>
<s>
IOC	O
was	O
removed	O
from	O
z/OS	B-Application
1.9	O
,	O
introduced	O
in	O
2007	O
.	O
</s>
<s>
C	O
and	O
C++	B-Language
Compilers	O
for	O
OS/2	B-Application
and	O
Windows	O
,	O
version	O
3.65	O
(	O
1998	O
?	O
)	O
</s>
