<s>
SIMSCRIPT	B-Language
is	O
a	O
free-form	O
,	O
English-like	O
general-purpose	O
simulation	B-Language
language	I-Language
conceived	O
by	O
Harry	O
Markowitz	O
and	O
Bernard	O
Hausner	O
at	O
the	O
RAND	O
Corporation	O
in	O
1962	O
.	O
</s>
<s>
It	O
was	O
implemented	O
as	O
a	O
Fortran	B-Application
preprocessor	B-General_Concept
on	O
the	O
IBM	B-Device
7090	I-Device
and	O
was	O
designed	O
for	O
large	O
discrete	B-General_Concept
event	I-General_Concept
simulations	I-General_Concept
.	O
</s>
<s>
It	O
influenced	O
Simula	B-Language
.	O
</s>
<s>
Though	O
earlier	O
versions	O
were	O
released	O
into	O
the	O
public	O
domain	O
,	O
SIMSCRIPT	B-Language
was	O
commercialized	O
by	O
Markowitz	O
's	O
company	O
,	O
California	O
Analysis	O
Center	O
,	O
Inc	O
.	O
(	O
CACI	O
)	O
,	O
which	O
produced	O
proprietary	O
versions	O
SIMSCRIPT	B-Language
I.5	O
and	O
SIMSCRIPT	B-Language
II.5	O
.	O
</s>
<s>
SIMSCRIPT	B-Language
II.5	O
was	O
the	O
last	O
pre-PC	O
incarnation	O
of	O
SIMSCRIPT	B-Language
,	O
one	O
of	O
the	O
oldest	O
computer	O
simulation	B-Language
languages	I-Language
.	O
</s>
<s>
SIMSCRIPT	B-Language
II.5	O
is	O
a	O
powerful	O
,	O
free-form	O
,	O
English-like	O
,	O
general-purpose	O
simulation	O
programming	O
language	O
.	O
</s>
<s>
SIMSCRIPT	B-Language
III	O
Release	O
4.0	O
was	O
available	O
by	O
2009	O
,	O
and	O
by	O
then	O
it	O
ran	O
on	O
Windows	B-Device
7	I-Device
,	O
SUN	B-Operating_System
OS	I-Operating_System
and	O
Linux	B-Application
and	O
has	O
Object-oriented	B-Language
features	O
.	O
</s>
<s>
By	O
1997	O
,	O
SIMSCRIPT	B-Language
III	O
already	O
had	O
a	O
GUI	O
interface	O
to	O
its	O
compiler	O
.	O
</s>
<s>
A	O
PL/I	B-Language
implementation	O
was	O
developed	O
during	O
1968-1969	O
,	O
based	O
on	O
the	O
public	O
domain	O
version	O
released	O
by	O
RAND	O
corporation	O
.	O
</s>
