<s>
GDDM	B-Device
(	O
Graphical	B-Device
Data	I-Device
Display	I-Device
Manager	I-Device
)	O
is	O
a	O
computer	O
graphics	O
system	O
for	O
the	O
IBM	B-Device
System/370	I-Device
which	O
was	O
developed	O
in	O
IBM	O
's	O
Hursley	O
lab	O
,	O
and	O
first	O
released	O
in	O
1979	O
.	O
</s>
<s>
GDDM	B-Device
was	O
originally	O
designed	O
to	O
provide	O
programming	O
support	O
for	O
the	O
IBM	O
3279	O
colour	O
display	O
terminal	O
and	O
the	O
associated	O
3287	O
colour	O
printer	O
.	O
</s>
<s>
GDDM	B-Device
was	O
extended	O
in	O
the	O
early	O
1980s	O
to	O
provide	O
graphics	O
support	O
for	O
all	O
of	O
IBM	O
's	O
display	O
terminals	O
and	O
printers	O
,	O
and	O
ran	O
on	O
all	O
of	O
IBM	O
's	O
mainframe	O
operating	O
systems	O
.	O
</s>
<s>
GDDM	B-Device
also	O
provided	O
support	O
for	O
the	O
(	O
then	O
current	O
)	O
international	O
standards	O
for	O
interactive	O
computer	O
graphics	O
:	O
GKS	O
and	O
PHIGS	B-Library
.	O
</s>
<s>
Both	O
GKS	O
and	O
PHIGS	B-Library
were	O
designed	O
around	O
the	O
requirements	O
of	O
CAD	B-Application
systems	O
.	O
</s>
<s>
GDDM	B-Device
is	O
also	O
available	O
on	O
the	O
IBM	O
i	O
midrange	O
operating	O
system	O
,	O
as	O
well	O
as	O
its	O
predecessor	O
,	O
the	O
AS/400	O
.	O
</s>
<s>
GDDM	B-Device
comprises	O
a	O
number	O
of	O
components	O
:	O
</s>
<s>
GDDM	B-Device
remains	O
in	O
widespread	O
use	O
today	O
,	O
embedded	O
in	O
many	O
z/OS	B-Application
applications	O
,	O
as	O
well	O
as	O
in	O
system	O
programs	O
.	O
</s>
<s>
IBM	O
and	O
Microsoft	O
began	O
collaborating	O
on	O
the	O
design	O
of	O
OS/2	B-Application
in	O
1986	O
.	O
</s>
<s>
The	O
Graphics	O
Presentation	O
Interface	O
(	O
GPI	O
)	O
,	O
the	O
graphics	O
API	B-General_Concept
in	O
the	O
OS/2	B-Device
Presentation	I-Device
Manager	I-Device
,	O
was	O
based	O
on	O
IBM	O
's	O
GDDM	B-Device
and	O
the	O
Graphics	O
Control	O
Program	O
(	O
GCP	O
)	O
.	O
</s>
<s>
The	O
GPI	O
was	O
the	O
primary	O
graphics	O
API	B-General_Concept
for	O
the	O
OS/2	B-Application
operating	O
system	O
.	O
</s>
<s>
At	O
the	O
time	O
(	O
1980s	O
)	O
,	O
the	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
was	O
still	O
in	O
its	O
early	O
stages	O
of	O
popularity	O
,	O
but	O
already	O
it	O
was	O
clear	O
that	O
the	O
foundation	O
of	O
a	O
good	O
GUI	B-Application
was	O
a	O
graphics	O
API	B-General_Concept
with	O
strong	O
real-time	O
interactive	O
capabilities	O
.	O
</s>
<s>
Unfortunately	O
,	O
the	O
design	O
of	O
GDDM	B-Device
was	O
closer	O
to	O
(	O
at	O
the	O
time	O
)	O
traditional	O
graphics	O
APIs	B-General_Concept
like	O
GKS	O
,	O
which	O
made	O
it	O
unsuited	O
for	O
more	O
than	O
the	O
simplest	O
interactive	O
uses	O
.	O
</s>
<s>
Microsoft	O
continued	O
development	O
of	O
its	O
Windows	B-Application
operating	O
environment	O
with	O
Graphics	B-Operating_System
Device	I-Operating_System
Interface	I-Operating_System
(	O
GDI	O
)	O
graphics	O
API	B-General_Concept
.	O
</s>
<s>
IBM	O
continued	O
with	O
OS/2	B-Application
for	O
several	O
more	O
years	O
.	O
</s>
