<s>
Parser	B-Language
is	O
a	O
scripting	B-Language
language	I-Language
developed	O
by	O
Art	O
.	O
</s>
<s>
Lebedev	O
Studio	O
used	O
for	O
web	O
development	O
and	O
server-side	B-Language
scripting	I-Language
.	O
</s>
<s>
The	O
reference	O
compiler	O
for	O
the	O
language	O
was	O
developed	O
in	O
C++	B-Language
by	O
studio	O
employees	O
Konstantin	O
Morshnev	O
and	O
Alexander	O
Petrosyan	O
to	O
automate	O
often	O
repeated	O
tasks	O
,	O
especially	O
maintenance	O
of	O
already	O
existing	O
websites	O
.	O
</s>
<s>
In	O
March	O
2006	O
,	O
revision	O
three	O
was	O
released	O
as	O
free	B-Application
software	I-Application
under	O
a	O
GPL	B-License
license	I-License
and	O
it	O
is	O
now	O
used	O
in	O
other	O
websites	O
,	O
mostly	O
in	O
Russia	O
(	O
according	O
to	O
a	O
partial	O
list	O
at	O
the	O
language	O
website	O
)	O
.	O
</s>
<s>
Originally	O
,	O
Parser	B-Language
was	O
merely	O
a	O
simple	O
macro	O
processing	O
language	O
but	O
revision	O
three	O
introduced	O
object-oriented	B-Language
programming	I-Language
features	O
.	O
</s>
<s>
The	O
language	O
supports	O
technologies	O
needed	O
for	O
common	O
web	O
design	O
tasks	O
:	O
XML	B-Protocol
,	O
Document	B-General_Concept
Object	I-General_Concept
Model	I-General_Concept
(	O
DOM	B-General_Concept
)	O
,	O
Perl	B-Language
Compatible	I-Language
Regular	I-Language
Expressions	I-Language
(	O
PCRE	B-Language
)	O
and	O
others	O
.	O
</s>
<s>
Parser	B-Language
supports	O
web	O
server	O
integration	O
via	O
:	O
</s>
