<s>
Scream	B-Application
Tracker	I-Application
is	O
a	O
tracker	B-Application
(	O
an	O
integrated	O
multi-track	O
step	O
sequencer	O
and	O
sampler	O
as	O
a	O
software	O
application	O
)	O
.	O
</s>
<s>
It	O
was	O
written	O
in	O
C	B-Language
and	O
assembly	B-Language
language	I-Language
.	O
</s>
<s>
The	O
first	O
version	O
(	O
1.0	O
)	O
had	O
monophonic	O
4-bit	O
output	O
via	O
the	O
PC	B-Device
speaker	I-Device
,	O
as	O
well	O
as	O
8-bit	O
output	O
via	O
Covox	O
(	O
a	O
digital-to-analog	O
converter	O
using	O
the	O
parallel	B-Device
port	I-Device
)	O
or	O
a	O
Sound	B-Application
Blaster	I-Application
1.x	O
card	B-Device
.	O
</s>
<s>
The	O
first	O
popular	O
version	O
of	O
Scream	B-Application
Tracker	I-Application
,	O
version	O
2.2	O
,	O
was	O
published	O
in	O
1990	O
.	O
</s>
<s>
Versions	O
prior	O
to	O
3.0	O
created	O
STM	O
(	O
Scream	B-Application
Tracker	I-Application
Module	O
)	O
files	O
,	O
while	O
versions	O
3.0	O
and	O
above	O
used	O
the	O
S3M	O
(	O
ScreamTracker	B-Application
3	O
Module	O
)	O
format	O
.	O
</s>
<s>
As	O
of	O
version	O
3.0	O
,	O
Scream	B-Application
Tracker	I-Application
supports	O
up	O
to	O
99	O
8-bit	O
samples	O
,	O
32	O
channels	O
,	O
100	O
patterns	O
,	O
and	O
256	O
order	O
positions	O
.	O
</s>
<s>
It	O
can	O
also	O
handle	O
up	O
to	O
9	O
FM-synthesis	O
channels	O
on	O
sound	B-Device
cards	I-Device
using	O
the	O
popular	O
OPL2/3/4	O
chipsets	O
,	O
and	O
,	O
unusually	O
,	O
can	O
play	O
PCM	O
samples	O
and	O
FM	B-Application
instruments	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
16-position	O
free	O
panning	O
is	O
available	O
using	O
the	O
S8x	O
command	O
,	O
but	O
only	O
on	O
the	O
Gravis	B-Application
Ultrasound	I-Application
.	O
</s>
<s>
The	O
usage	O
of	O
the	O
A	O
channels	O
requires	O
the	O
presence	O
of	O
an	O
AdLib-compatible	O
card	B-Device
either	O
by	O
itself	O
or	O
alongside	O
another	O
sound	B-Device
card	I-Device
.	O
</s>
<s>
The	O
last	O
version	O
of	O
Scream	B-Application
Tracker	I-Application
was	O
3.21	O
,	O
released	O
in	O
1994	O
,	O
placing	O
it	O
in	O
competition	O
with	O
FastTracker	O
2	O
.	O
</s>
<s>
It	O
was	O
the	O
precursor	O
of	O
the	O
PC	O
tracking	O
scene	O
and	O
its	O
interface	O
inspired	O
newer	O
trackers	B-Application
like	O
Impulse	B-Application
Tracker	I-Application
.	O
</s>
<s>
Various	O
other	O
trackers	B-Application
(	O
such	O
as	O
Impulse	B-Application
Tracker	I-Application
or	O
OpenMPT	B-Language
)	O
adopted	O
the	O
use	O
of	O
the	O
Scream	B-Application
Tracker	I-Application
's	O
S3M	O
format	O
.	O
</s>
