<s>
The	O
Symbolic	B-Language
Stream	I-Language
Generator	I-Language
(	O
or	O
SSG	O
)	O
is	O
a	O
software	O
productivity	O
aid	O
by	O
Unisys	O
for	O
their	O
mainframe	B-Architecture
computers	I-Architecture
of	O
the	O
former	O
UNIVAC	B-Device
1100/2200	I-Device
series	I-Device
.	O
</s>
<s>
SSG	O
is	O
used	O
to	O
generate	O
RUN-Streams	O
(	O
corresponding	O
to	O
IBM	O
's	O
Job	B-Application
Control	I-Application
Language	I-Application
)	O
,	O
apply	O
and	O
administer	O
symbolic	O
changes	O
to	O
program	O
sources	O
as	O
a	O
form	O
of	O
version	B-Architecture
control	I-Architecture
,	O
and	O
for	O
many	O
other	O
purposes	O
.	O
</s>
<s>
An	O
SSG	O
program	O
(	O
i.e.	O
,	O
its	O
"	O
job	O
control	O
script	B-Language
"	O
)	O
is	O
called	O
a	O
Skeleton	O
,	O
and	O
its	O
programming	O
language	O
Symstream	O
.	O
</s>
