<s>
Printer	B-Language
Job	I-Language
Language	I-Language
(	O
PJL	B-Language
)	O
is	O
a	O
method	O
developed	O
by	O
Hewlett-Packard	O
for	O
switching	O
printer	O
languages	O
at	O
the	O
job	O
level	O
,	O
and	O
for	O
status	O
readback	O
between	O
the	O
printer	O
and	O
the	O
host	O
computer	O
.	O
</s>
<s>
PJL	B-Language
adds	O
job	O
level	O
controls	O
,	O
such	O
as	O
printer	O
language	O
switching	O
,	O
job	O
separation	O
,	O
environment	O
,	O
status	O
readback	O
,	O
device	O
attendance	O
and	O
file	O
system	O
commands	O
.	O
</s>
<s>
"	O
PJL	B-Language
offers	O
application	O
programs	O
an	O
efficient	O
way	O
to	O
remotely	O
control	O
Hewlett-Packard	O
printers	O
.	O
</s>
<s>
Using	O
PJL	B-Language
,	O
developers	O
can	O
provide	O
applications	O
with	O
the	O
ability	O
to	O
programmatically	O
switch	O
printer	O
languages	O
,	O
monitor	O
printer	O
status	O
,	O
request	O
the	O
printer	O
model	O
and	O
configuration	O
,	O
change	O
control	O
panel	O
default	O
settings	O
,	O
modify	O
control	O
panel	O
messages	O
,	O
and	O
more.	O
"	O
</s>
<s>
While	O
PJL	B-Language
was	O
conceived	O
as	O
an	O
extension	O
to	O
Printer	B-Language
Command	I-Language
Language	I-Language
(	O
PCL	B-Language
)	O
,	O
it	O
is	O
now	O
supported	O
by	O
most	O
PostScript	B-Language
printers	O
.	O
</s>
<s>
Many	O
printer	O
vendors	O
have	O
extended	O
PJL	B-Language
to	O
include	O
commands	O
proprietary	O
to	O
their	O
products	O
.	O
</s>
<s>
Not	O
all	O
PJL	B-Language
commands	O
documented	O
by	O
HP	O
are	O
implemented	O
in	O
all	O
HP	O
or	O
other	O
vendor	O
products	O
.	O
</s>
<s>
PJL	B-Language
resides	O
above	O
all	O
the	O
other	O
printer	O
languages	O
and	O
parses	O
commands	O
first	O
.	O
</s>
<s>
The	O
syntax	B-Application
mainly	O
uses	O
plain	O
English	O
words	O
.	O
</s>
