<s>
CS-4	B-Language
is	O
a	O
programming	O
language	O
and	O
an	O
operating	O
system	O
interface	O
.	O
</s>
<s>
The	O
first	O
published	O
manual	O
was	O
released	O
in	O
December	O
1973	O
,	O
entitled	O
"	O
CS-4	B-Language
Language	O
Reference	O
Manual	O
and	O
Operating	O
System	O
Interface	O
"	O
.	O
</s>
<s>
The	O
document	O
had	O
three	O
parts	O
:	O
CS-4	B-Language
Base	O
Language	O
Capabilities	O
;	O
CS-4	B-Language
Operating	O
System	O
Interface	O
;	O
and	O
Overview	O
of	O
Full	O
CS-4	B-Language
Capabilities	O
.	O
</s>
<s>
Little	O
is	O
known	O
about	O
the	O
CS-4	B-Language
language	O
,	O
but	O
it	O
was	O
developed	O
for	O
the	O
United	O
States	O
Navy	O
in	O
the	O
1970s	O
,	O
and	O
was	O
an	O
ongoing	O
research	O
project	O
,	O
which	O
was	O
continuing	O
the	O
study	O
of	O
extensibility	O
and	O
abstraction	O
techniques	O
to	O
develop	O
a	O
requirement	O
of	O
the	O
language	O
to	O
be	O
simple	O
and	O
compact	O
.	O
</s>
<s>
Praxis	O
explicitly	O
refers	O
to	O
CS-4	B-Language
as	O
a	O
predecessor	O
language	O
.	O
</s>
