<s>
The	O
term	O
"	O
string	B-Application
grammar	I-Application
"	O
in	O
computational	O
linguistics	O
(	O
and	O
computer	B-Language
languages	I-Language
)	O
refers	O
to	O
the	O
structure	O
of	O
a	O
specific	O
language	O
,	O
such	O
that	O
it	O
can	O
be	O
formatted	O
as	O
a	O
single	O
continuous	O
string	O
of	O
text	O
,	O
without	O
the	O
need	O
to	O
have	O
line-breaks	O
(	O
or	O
newlines	O
)	O
to	O
alter	O
the	O
meaning	O
.	O
</s>
<s>
The	O
appearance	O
of	O
any	O
text	O
in	O
"	O
column1	O
"	O
(	O
or	O
any	O
column	O
)	O
of	O
a	O
line	O
does	O
not	O
change	O
the	O
meaning	O
of	O
that	O
text	O
in	O
a	O
string	B-Application
grammar	I-Application
.	O
</s>
<s>
A	O
string	B-Application
grammar	I-Application
can	O
be	O
used	O
to	O
describe	O
the	O
structure	O
of	O
some	O
natural	O
languages	O
,	O
such	O
as	O
English	O
or	O
French	O
,	O
as	O
well	O
as	O
for	O
some	O
computer	B-Language
languages	I-Language
.	O
</s>
<s>
When	O
a	O
string	B-Application
grammar	I-Application
is	O
used	O
to	O
define	O
a	O
computer	B-Language
language	I-Language
,	O
some	O
string-grammar	B-Application
parsing	B-Language
tools	O
and	O
compiler-generator	B-Language
tools	O
can	O
be	O
used	O
to	O
more	O
easily	O
create	O
a	O
compiler	B-Language
software	O
system	O
for	O
that	O
particular	O
computer	B-Language
language	I-Language
.	O
</s>
<s>
Because	O
other	O
grammars	O
can	O
be	O
more	O
difficult	O
to	O
use	O
for	O
parsing	B-Language
text	O
written	O
in	O
a	O
specific	O
computer	B-Language
language	I-Language
,	O
using	O
a	O
string	B-Application
grammar	I-Application
is	O
a	O
means	O
to	O
seek	O
simplicity	O
in	O
language	O
processing	O
.	O
</s>
<s>
An	O
example	O
is	O
"	O
address	B-Protocol
string	I-Protocol
grammar	O
"	O
,	O
which	O
is	O
a	O
grammar	O
for	O
Internet	B-Protocol
Protocol	I-Protocol
address	I-Protocol
strings	O
.	O
</s>
<s>
Another	O
is	O
the	O
term	O
"	O
numeric	O
string	B-Application
grammar	I-Application
"	O
which	O
refers	O
to	O
numeric	O
strings	O
(	O
strings	O
which	O
denote	O
numbers	O
or	O
numerals	O
)	O
.	O
</s>
