<s>
OpenSCAD	B-Language
is	O
a	O
free	B-Application
software	I-Application
application	O
for	O
creating	O
solid	O
3D	O
computer-aided	B-Application
design	I-Application
(	O
CAD	B-Application
)	O
objects	O
.	O
</s>
<s>
Instead	O
,	O
an	O
OpenSCAD	B-Language
script	O
specifies	O
geometric	O
primitives	O
(	O
such	O
as	O
spheres	O
,	O
boxes	O
,	O
cylinders	O
,	O
etc	O
.	O
)	O
</s>
<s>
and	O
defines	O
how	O
they	O
are	O
modified	O
and	O
combined	O
(	O
for	O
instance	O
by	O
intersection	O
,	O
difference	O
,	O
envelope	O
combination	O
,	O
or	O
Minkowski	B-Algorithm
sums	I-Algorithm
)	O
to	O
render	O
a	O
3D	O
model	O
.	O
</s>
<s>
OpenSCAD	B-Language
is	O
available	O
for	O
Windows	B-Application
,	O
Linux	B-Application
,	O
and	O
macOS	B-Application
.	O
</s>
<s>
OpenSCAD	B-Language
employs	O
special	O
The	O
OpenSCAD	B-Language
Language	O
to	O
produce	O
3D	O
graphics	O
.	O
</s>
<s>
For	O
fast	O
previewing	O
of	O
models	O
using	O
z-buffering	O
,	O
OpenSCAD	B-Language
employs	O
OpenCSG	O
and	O
OpenGL	B-Application
.	O
</s>
<s>
OpenSCAD	B-Language
allows	O
a	O
designer	O
to	O
create	O
accurate	O
3D	O
models	O
and	O
parametric	O
designs	O
that	O
can	O
be	O
easily	O
adjusted	O
by	O
changing	O
the	O
parameters	O
.	O
</s>
<s>
OpenSCAD	B-Language
documents	O
are	O
human-readable	O
scripts	O
in	O
plain	O
ASCII	O
text	O
and	O
potentially	O
syntactically	O
better	O
suited	O
to	O
integrate	O
with	O
version	O
control	O
systems	O
such	O
as	O
GIT	O
.	O
</s>
<s>
As	O
such	O
,	O
OpenSCAD	B-Language
is	O
a	O
programmer-oriented	O
solid-modeling	O
tool	O
and	O
has	O
been	O
recommended	O
as	O
an	O
entry-level	O
CAD	B-Application
tool	O
for	O
designing	O
open-source	O
hardware	O
such	O
as	O
scientific	O
tools	O
for	O
research	O
and	O
education	O
.	O
</s>
<s>
An	O
experimental	O
coupling	O
with	O
Calculix	B-Application
for	O
FEM	O
(	O
Finite	B-Application
Element	I-Application
Method	I-Application
)	O
is	O
available	O
.	O
</s>
<s>
FreeCAD	B-Language
can	O
import	O
OpenSCAD	B-Language
files	O
also	O
for	O
FEM	O
with	O
Calculix	B-Application
or	O
other	O
supported	O
FEM	O
solvers	O
.	O
</s>
<s>
FreeCAD	B-Language
features	O
a	O
workbench	O
for	O
interoperability	O
with	O
OpenSCAD	B-Language
.	O
</s>
<s>
2D	O
drawings	O
in	O
DXF	O
,	O
SVG	B-Application
and	O
PNG	O
can	O
be	O
imported	O
,	O
then	O
extruded	O
as	O
monolithic	O
parts	O
.	O
</s>
<s>
OpenSCAD	B-Language
views	O
and	O
models	O
can	O
be	O
exported	O
to	O
many	O
different	O
formats	O
.	O
</s>
<s>
2D	O
models	O
can	O
be	O
exported	O
in	O
SVG	B-Application
,	O
AutoCAD	O
DXF	O
,	O
and	O
PDF	B-Application
.	O
</s>
<s>
OpenSCAD	B-Language
is	O
a	O
wrapper	O
to	O
a	O
CSG	O
engine	O
with	O
a	O
graphical	O
user	O
interface	O
and	O
integrated	O
editor	O
,	O
developed	O
in	O
C++	B-Language
.	O
</s>
<s>
As	O
of	O
2016	O
,	O
it	O
uses	O
the	O
Computational	B-Language
Geometry	I-Language
Algorithms	I-Language
Library	I-Language
(	O
CGAL	B-Language
)	O
as	O
its	O
basic	O
CSG	O
engine	O
.	O
</s>
<s>
Its	O
script	O
syntax	O
reflects	O
a	O
functional	B-Language
programming	I-Language
philosophy	O
.	O
</s>
<s>
Much	O
as	O
in	O
Haskell	B-Language
,	O
within	O
a	O
scope	O
each	O
"	O
variable	O
"	O
is	O
treated	O
as	O
a	O
constant	O
,	O
immutable	O
with	O
at	O
most	O
one	O
value	O
.	O
</s>
