<s>
The	O
PL/P	B-Language
programming	O
language	O
(	O
an	O
acronym	O
of	O
Programming	O
Language	O
for	O
Prime	O
(	O
computers	O
)	O
)	O
is	O
a	O
mid-level	O
programming	O
language	O
developed	O
by	O
Prime	O
Computer	O
to	O
serve	O
as	O
their	O
second	O
primary	O
system	B-Language
programming	I-Language
language	I-Language
after	O
Fortran	B-Application
IV	I-Application
.	O
</s>
<s>
PL/P	B-Language
was	O
a	O
subset	O
of	O
PL/I	B-Language
.	O
</s>
<s>
Additions	O
to	O
the	O
PRIMOS	B-General_Concept
operating	O
system	O
for	O
Prime	O
50	O
Series	O
computers	O
were	O
written	O
mostly	O
in	O
PL/P	B-Language
in	O
later	O
years	O
.	O
</s>
<s>
Certain	O
PRIMOS	B-General_Concept
modules	O
written	O
in	O
Fortran	B-Application
IV	I-Application
during	O
PRIMOS	B-General_Concept
's	O
early	O
years	O
were	O
rewritten	O
in	O
PL/P	B-Language
.	O
</s>
<s>
PL/P	B-Language
was	O
the	O
most	O
widespread	O
compiled	O
programming	O
language	O
used	O
for	O
commercial	O
PRIMOS	B-General_Concept
applications	B-Application
,	O
outpacing	O
the	O
use	O
of	O
the	O
Prime	O
C	B-Language
compiler	O
,	O
the	O
CPL	O
(	O
PRIMOS	B-General_Concept
)	O
scripting	O
language	O
,	O
and	O
the	O
Fortran	B-Application
IV	I-Application
compiler	O
in	O
commercial	O
applications	B-Application
.	O
</s>
