<s>
In	O
computer	O
aided	O
engineering	O
(	O
CAE	O
)	O
a	O
preprocessor	B-General_Concept
is	O
a	O
program	B-Application
which	O
provides	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
to	O
define	O
physical	O
properties	O
.	O
</s>
<s>
This	O
data	O
is	O
used	O
by	O
the	O
subsequent	O
computer	B-Application
simulation	I-Application
.	O
</s>
