<s>
Conversational	B-General_Concept
Programming	I-General_Concept
System	I-General_Concept
or	O
CPS	O
was	O
an	O
early	O
Time-sharing	B-General_Concept
system	I-General_Concept
offered	O
by	O
IBM	O
which	O
ran	O
on	O
System/360	B-Application
mainframes	B-Architecture
circa	O
1967	O
through	O
1972	O
in	O
a	O
partition	O
of	O
OS/360	O
Release	O
17	O
MFT	O
II	O
or	O
MVT	O
or	O
above	O
.	O
</s>
<s>
CPS	O
was	O
implemented	O
as	O
an	O
interpreter	B-Application
,	O
and	O
users	O
could	O
select	O
either	O
a	O
rudimentary	O
form	O
of	O
BASIC	O
or	O
a	O
reasonably	O
complete	O
version	O
of	O
PL/I	B-Language
.	O
</s>
<s>
A	O
third	O
option	O
provided	O
remote	B-Protocol
job	I-Protocol
entry	I-Protocol
(	O
RJE	B-Protocol
)	O
features	O
allowing	O
users	O
to	O
submit	O
JCL	B-Application
job	B-Application
streams	I-Application
for	O
batch	O
processing	O
.	O
</s>
<s>
It	O
accomplished	O
this	O
by	O
giving	O
an	O
immediate	O
syntax	B-Application
error	I-Application
(	O
when	O
necessary	O
)	O
as	O
soon	O
as	O
each	O
line	O
of	O
a	O
program	O
was	O
entered	O
.	O
</s>
<s>
CPS	O
was	O
also	O
offered	O
with	O
a	O
firmware-assisted	O
interpreter	B-Application
,	O
on	O
the	O
IBM	B-Device
System/360	I-Device
Model	I-Device
50	I-Device
,	O
only	O
,	O
but	O
few	O
Model	O
50	O
installations	O
elected	O
to	O
install	O
this	O
RPQ	O
.	O
</s>
<s>
The	O
IBM-released	O
version	O
of	O
CPS	O
was	O
designed	O
to	O
run	O
on	O
the	O
IBM	B-Device
1050	I-Device
terminal	O
and	O
the	O
IBM	O
2741	O
terminal	O
with	O
the	O
"	O
break	O
feature	O
"	O
.	O
</s>
<s>
User	O
groups	O
later	O
added	O
support	O
for	O
the	O
IBM	B-Device
2260	I-Device
video	O
display	O
terminal	O
.	O
</s>
<s>
CPS	O
support	O
for	O
the	O
IBM	O
2741	O
"	O
break	O
feature	O
"	O
most	O
likely	O
influenced	O
the	O
eventual	O
user	O
group	O
support	O
for	O
the	O
"	O
break	O
feature	O
"	O
and	O
the	O
IBM	B-Device
1050	I-Device
terminal	O
on	O
IBM	B-Protocol
Administrative	I-Protocol
Terminal	I-Protocol
System	I-Protocol
(	O
ATS/360	O
)	O
,	O
as	O
many	O
IBM	O
customers	O
which	O
operated	O
CPS	O
also	O
operated	O
ATS/360	O
.	O
</s>
<s>
CPS	O
was	O
ultimately	O
superseded	O
by	O
TSO	B-Application
.	O
</s>
<s>
An	O
IBM	O
program	B-Application
product	I-Application
was	O
offered	O
which	O
provided	O
limited	O
CPS	O
functionality	O
under	O
TSO	B-Application
,	O
intended	O
mainly	O
as	O
a	O
"	O
bridge	O
"	O
between	O
CPS	O
and	O
TSO	B-Application
.	O
</s>
