<s>
In	O
computing	O
,	O
Gist	B-Device
is	O
a	O
scientific	O
graphics	O
library	O
written	O
in	O
C	B-Language
by	O
David	O
H	O
.	O
Munro	O
of	O
Lawrence	O
Livermore	O
National	O
Laboratory	O
.	O
</s>
<s>
It	O
supports	O
three	O
graphics	O
output	O
devices	O
:	O
X	B-Operating_System
Window	I-Operating_System
,	O
PostScript	B-Language
,	O
and	O
Computer	O
Graphics	O
Metafiles	O
(	O
CGM	O
)	O
.	O
</s>
<s>
Portability	O
is	O
restricted	O
to	O
systems	O
running	O
X	B-Operating_System
Window	I-Operating_System
(	O
essentially	O
the	O
Unix	B-Application
world	O
)	O
.	O
</s>
<s>
There	O
is	O
a	O
Python	B-Language
port	O
called	O
PyGist	O
;	O
it	O
is	O
used	O
as	O
one	O
of	O
several	O
optional	O
graphics	O
front-ends	O
of	O
the	O
scientific	O
library	O
SciPy	B-Application
.	O
</s>
<s>
PyGist	O
is	O
also	O
ported	O
to	O
Mac	B-Application
OS	I-Application
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
