<s>
Picogen	B-Language
is	O
a	O
rendering	O
system	O
for	O
the	O
creation	O
and	O
rendering	O
of	O
artificial	O
terrain	O
,	O
based	O
on	O
ray	B-Algorithm
tracing	I-Algorithm
.	O
</s>
<s>
It	O
is	O
free	B-Application
software	I-Application
.	O
</s>
<s>
While	O
the	O
primary	O
purpose	O
of	O
picogen	B-Language
is	O
to	O
display	O
realistic	O
3D	O
terrain	O
,	O
both	O
in	O
terms	O
of	O
terrain	O
formation	O
and	O
image	O
plausibility	O
,	O
it	O
also	O
is	O
a	O
heightmap-creation	O
tool	O
,	O
in	O
which	O
heightmaps	B-Data_Structure
are	O
programmed	B-Application
in	O
a	O
syntax	O
reminiscent	O
of	O
Lisp	B-Language
.	O
</s>
<s>
The	O
shading	B-General_Concept
system	O
is	O
partially	O
programmable	O
.	O
</s>
<s>
Currently	O
there	O
is	O
a	O
frontend	O
to	O
picogen	B-Language
,	O
called	O
picogen-wx	O
(	O
based	O
on	O
wxWidgets	B-Language
)	O
.	O
</s>
<s>
It	O
is	O
encapsulated	O
from	O
picogen	B-Language
and	O
thus	O
communicates	O
with	O
it	O
on	O
command-line	B-Application
level	O
.	O
</s>
<s>
Picogen-wx	O
provides	O
several	O
panels	O
to	O
design	O
the	O
different	O
aspects	O
of	O
a	O
landscape	O
,	O
e.g.	O
</s>
<s>
Landscapes	O
can	O
be	O
loaded	O
and	O
saved	O
through	O
an	O
own	O
,	O
simple	O
XML-based	O
file	O
format	O
,	O
and	O
images	O
of	O
arbitrary	O
size	O
(	O
including	O
antialiasing	O
)	O
can	O
be	O
saved	O
.	O
</s>
