<s>
HeeksCAD	B-Language
is	O
a	O
free	B-Application
software	I-Application
computer-aided	B-Application
design	I-Application
program	O
written	O
in	O
C++	B-Language
.	O
</s>
<s>
It	O
uses	O
Open	B-Language
CASCADE	I-Language
Technology	I-Language
internally	O
for	O
the	O
modelling	O
and	O
wxWidgets	B-Language
as	O
its	O
widget	B-Library
toolkit	I-Library
.	O
</s>
<s>
HeeksCAD	B-Language
supports	O
cuboids	O
,	O
spheres	O
,	O
cylinders	O
and	O
cones	O
as	O
basic	O
3D	O
solids	O
.	O
</s>
<s>
HeeksCAD	B-Language
makes	O
extensive	O
use	O
of	O
local	O
coordinate	O
systems	O
.	O
</s>
<s>
Plugins	O
are	O
available	O
for	O
Python	B-Language
scripting	O
,	O
milling	O
and	O
freeform	O
surface	O
modelling	O
.	O
</s>
