<s>
The	O
Berkeley	B-Operating_System
printing	I-Operating_System
system	I-Operating_System
is	O
one	O
of	O
several	O
standard	O
architectures	O
for	O
printing	O
on	O
the	O
Unix	B-Application
platform	O
.	O
</s>
<s>
It	O
originated	O
in	O
2.10BSD	O
,	O
and	O
is	O
used	O
in	O
BSD	B-Operating_System
derivatives	O
such	O
as	O
FreeBSD	B-Operating_System
,	O
NetBSD	B-Device
,	O
OpenBSD	B-Operating_System
,	O
and	O
DragonFly	B-Application
BSD	I-Application
.	O
</s>
<s>
A	O
system	O
running	O
this	O
print	O
architecture	O
could	O
traditionally	O
be	O
identified	O
by	O
the	O
use	O
of	O
the	O
user	O
command	O
lpr	O
as	O
the	O
primary	O
interface	O
to	O
the	O
print	O
system	O
,	O
as	O
opposed	O
to	O
the	O
System	B-Operating_System
V	I-Operating_System
printing	I-Operating_System
system	I-Operating_System
lp	B-Operating_System
command	O
.	O
</s>
<s>
These	O
programs	O
support	O
the	O
line	B-Protocol
printer	I-Protocol
daemon	I-Protocol
protocol	I-Protocol
,	O
so	O
that	O
other	O
machines	O
on	O
a	O
network	O
can	O
submit	O
jobs	O
to	O
a	O
print	B-General_Concept
queue	I-General_Concept
on	O
a	O
machine	O
running	O
the	O
Berkeley	B-Operating_System
printing	I-Operating_System
system	I-Operating_System
,	O
and	O
so	O
that	O
the	O
Berkeley	B-Operating_System
printing	I-Operating_System
system	I-Operating_System
user	O
commands	O
can	O
submit	O
jobs	O
to	O
machines	O
that	O
support	O
that	O
protocol	O
.	O
</s>
