<s>
A	O
graphics	B-Library
library	I-Library
is	O
a	O
program	B-Library
library	I-Library
designed	O
to	O
aid	O
in	O
rendering	O
computer	O
graphics	O
to	O
a	O
monitor	O
.	O
</s>
<s>
This	O
can	O
be	O
done	O
purely	O
in	O
software	B-Application
and	O
running	O
on	O
the	O
CPU	B-General_Concept
,	O
common	O
in	O
embedded	B-Architecture
systems	I-Architecture
,	O
or	O
being	O
hardware	B-General_Concept
accelerated	I-General_Concept
by	O
a	O
GPU	B-Architecture
,	O
more	O
common	O
in	O
PCs	B-Device
.	O
</s>
<s>
By	O
employing	O
these	O
functions	O
,	O
a	O
program	B-Application
can	O
assemble	O
an	O
image	O
to	O
be	O
output	O
to	O
a	O
monitor	O
.	O
</s>
<s>
This	O
relieves	O
the	O
programmer	O
of	O
the	O
task	O
of	O
creating	O
and	O
optimizing	O
these	O
functions	O
,	O
and	O
allows	O
them	O
to	O
focus	O
on	O
building	O
the	O
graphics	O
program	B-Application
.	O
</s>
<s>
Graphics	B-Library
libraries	I-Library
are	O
mainly	O
used	O
in	O
video	O
games	O
and	O
simulations	O
.	O
</s>
<s>
The	O
use	O
of	O
graphics	B-Library
libraries	I-Library
in	O
connection	O
with	O
video	O
production	O
systems	O
,	O
such	O
as	O
Pixar	B-Application
RenderMan	I-Application
,	O
is	O
not	O
covered	O
here	O
.	O
</s>
<s>
Some	O
APIs	B-Application
use	O
Graphics	B-Library
Library	I-Library
(	O
GL	O
)	O
in	O
their	O
name	O
,	O
notably	O
OpenGL	B-Application
and	O
WebGL	B-Library
.	O
</s>
