<s>
A	O
lightweight	B-Protocol
markup	I-Protocol
language	I-Protocol
(	O
LML	O
)	O
,	O
also	O
termed	O
a	O
simple	O
or	O
humane	B-Protocol
markup	I-Protocol
language	I-Protocol
,	O
is	O
a	O
markup	O
language	O
with	O
simple	O
,	O
unobtrusive	O
syntax	O
.	O
</s>
<s>
Lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
are	O
used	O
in	O
applications	O
where	O
it	O
may	O
be	O
necessary	O
to	O
read	O
the	O
raw	O
document	O
as	O
well	O
as	O
the	O
final	O
rendered	O
output	O
.	O
</s>
<s>
Another	O
application	O
for	O
such	O
languages	O
is	O
to	O
provide	O
for	O
data	O
entry	O
in	O
web-based	O
publishing	O
,	O
such	O
as	O
weblogs	O
and	O
wikis	B-Protocol
,	O
where	O
the	O
input	O
interface	O
is	O
a	O
simple	O
text	O
box	O
.	O
</s>
<s>
The	O
server	O
software	O
then	O
converts	O
the	O
input	O
into	O
a	O
common	O
document	O
markup	O
language	O
like	O
HTML	B-Language
.	O
</s>
<s>
Lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
were	O
originally	O
used	O
on	O
text-only	O
displays	O
which	O
could	O
not	O
display	O
characters	O
in	O
italics	O
or	O
bold	O
,	O
so	O
informal	O
methods	O
to	O
convey	O
this	O
information	O
had	O
to	O
be	O
developed	O
.	O
</s>
<s>
Console	B-Protocol
browsers	I-Protocol
may	O
also	O
resort	O
to	O
similar	O
display	O
conventions	O
.	O
</s>
<s>
In	O
1986	O
international	O
standard	O
SGML	B-Language
provided	O
facilities	O
to	O
define	O
and	O
parse	O
lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
using	O
grammars	O
and	O
tag	O
implication	O
.	O
</s>
<s>
The	O
1998	O
W3C	O
XML	B-Protocol
is	O
a	O
profile	O
of	O
SGML	B-Language
that	O
omits	O
these	O
facilities	O
.	O
</s>
<s>
However	O
,	O
no	O
SGML	B-Language
document	B-Language
type	I-Language
definition	I-Language
(	O
DTD	O
)	O
for	O
any	O
of	O
the	O
languages	O
listed	O
below	O
is	O
known	O
.	O
</s>
<s>
Lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
can	O
be	O
categorized	O
by	O
their	O
tag	O
types	O
.	O
</s>
<s>
Like	O
HTML	B-Language
(	O
<b>bold</b>	O
)	O
,	O
some	O
languages	O
use	O
named	O
elements	O
that	O
share	O
a	O
common	O
format	O
for	O
start	O
and	O
end	O
tags	O
(	O
e.g.	O
</s>
<s>
BBCode	B-Language
 [ b ] bold [ /b ] 	O
)	O
,	O
whereas	O
proper	O
lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
are	O
restricted	O
to	O
ASCII-only	O
punctuation	O
marks	O
and	O
other	O
non-letter	O
symbols	O
for	O
tags	O
,	O
but	O
some	O
also	O
mix	O
both	O
styles	O
(	O
e.g.	O
</s>
<s>
or	O
allow	O
embedded	O
HTML	B-Language
(	O
e.g.	O
</s>
<s>
MediaWiki	B-Application
<ref>'''source'''</ref>	O
)	O
.	O
</s>
<s>
POD	B-Language
,	O
reST	B-Language
,	O
RD	B-Language
)	O
or	O
being	O
converted	O
to	O
a	O
certain	O
output	O
format	O
(	O
usually	O
HTML	B-Language
or	O
LaTeX	B-Application
)	O
and	O
nothing	O
else	O
,	O
others	O
are	O
more	O
general	O
in	O
application	O
.	O
</s>
<s>
Presentation	O
oriented	O
languages	O
include	O
AsciiDoc	B-Language
,	O
atx	B-Language
,	O
BBCode	B-Language
,	O
Creole	O
,	O
Crossmark	O
,	O
Epytext	B-Protocol
,	O
Haml	B-Application
,	O
JsonML	B-Protocol
,	O
MakeDoc	B-Language
,	O
Markdown	O
,	O
Org-mode	B-Operating_System
,	O
POD	B-Language
(	O
Perl	B-Language
)	O
,	O
reST	B-Language
(	O
Python	B-Language
)	O
,	O
RD	B-Language
(	O
Ruby	B-Language
)	O
,	O
Setext	B-Language
,	O
SiSU	B-Device
,	O
SPIP	B-Application
,	O
Xupl	O
,	O
Texy	O
!,	O
Textile	B-Language
,	O
txt2tags	B-Language
,	O
UDO	B-Language
and	O
Wikitext	O
.	O
</s>
<s>
Data	O
serialization	O
oriented	O
languages	O
include	O
Curl	B-Language
(	O
homoiconic	O
,	O
but	O
also	O
reads	O
JSON	B-General_Concept
;	O
every	O
object	O
serializes	O
)	O
,	O
JSON	B-General_Concept
,	O
and	O
YAML	B-Protocol
.	O
</s>
<s>
+	O
Comparing	O
language	O
features	O
Language	O
HTML	B-Language
export	O
tool	O
HTML	B-Language
import	O
tool	O
Tables	O
Link	O
titles	O
class	O
attribute	O
id	O
attribute	O
Release	O
date	O
AsciiDoc	B-Language
2002-11-25	O
BBCode	B-Language
1998	O
Creole	O
2007-07-04	O
Gemtext	O
2020	O
GitHub	B-Application
Flavored	I-Application
Markdown	I-Application
2011-04-28	O
+	O
Jira	B-Protocol
Formatting	I-Protocol
Notation	I-Protocol
2002+	O
Markdown	O
2004-03-19	O
Markdown	O
Extra	O
2013-04-11	O
MediaWiki	B-Application
2002	O
MultiMarkdown	B-Language
2009-07-13	O
Org-mode	B-Operating_System
Pandoc	B-Language
,	O
which	O
is	O
written	O
in	O
Haskell	B-Language
,	O
parses	O
Markdown	O
(	O
in	O
two	O
forms	O
)	O
and	O
ReStructuredText	B-Language
,	O
as	O
well	O
as	O
HTML	B-Language
and	O
LaTeX	B-Application
;	O
it	O
writes	O
from	O
any	O
of	O
these	O
formats	O
to	O
HTML	B-Language
,	O
RTF	O
,	O
LaTeX	B-Application
,	O
ConTeXt	O
,	O
OpenDocument	B-Application
,	O
EPUB	O
and	O
several	O
other	O
formats	O
,	O
including	O
(	O
via	O
LaTeX	B-Application
)	O
PDF	B-Application
.	O
</s>
<s>
Markdown	O
's	O
own	O
syntax	O
does	O
not	O
support	O
class	O
attributes	O
or	O
id	O
attributes	O
;	O
however	O
,	O
since	O
Markdown	O
supports	O
the	O
inclusion	O
of	O
native	O
HTML	B-Language
code	I-Language
,	O
these	O
features	O
can	O
be	O
implemented	O
using	O
direct	O
HTML	B-Language
.	O
</s>
<s>
txt2tags	B-Language
 '	O
own	O
syntax	O
does	O
not	O
support	O
class	O
attributes	O
or	O
id	O
attributes	O
;	O
however	O
,	O
since	O
txt2tags	B-Language
supports	O
inclusion	O
of	O
native	O
HTML	B-Language
code	I-Language
in	O
tagged	O
areas	O
,	O
these	O
features	O
can	O
be	O
implemented	O
using	O
direct	O
HTML	B-Language
when	O
saving	O
to	O
an	O
HTML	B-Language
target	O
.	O
</s>
<s>
+	O
Comparing	O
implementations	O
,	O
especially	O
output	O
formats	O
Language	O
Implementations	O
XHTML	B-Language
Con/LaTeX	O
PDF	B-Application
DocBook	B-Protocol
ODF	B-Application
EPUB	O
DOC(X )	O
LMLs	O
Other	O
License	O
AsciiDoc	B-Language
Python	B-Language
,	O
Ruby	B-Language
,	O
JavaScript	B-Language
,	O
Java	B-Language
—	O
Man	B-Protocol
page	I-Protocol
etc	O
.	O
</s>
<s>
GNU	B-License
GPL	I-License
,	O
MIT	B-License
BBCode	B-Language
Perl	B-Language
,	O
PHP	B-Application
,	O
C#	B-Application
,	O
Python	B-Language
,	O
Ruby	B-Language
—	O
—	O
Public	O
Domain	O
Creole	O
PHP	B-Application
,	O
Python	B-Language
,	O
Ruby	B-Language
,	O
JavaScript	B-Language
Depends	O
on	O
implementation	O
CC_BY-SA	O
1.0	O
GitHub	B-Application
Flavored	I-Application
Markdown	I-Application
Haskell	B-Language
(	O
Pandoc	B-Language
)	O
AsciiDoc	B-Language
,	O
reST	B-Language
OPML	B-Application
GPL	B-License
Java	B-Language
,	O
pegdown	O
:	O
A	O
Java	B-Language
library	O
for	O
Markdown	O
processing	O
JavaScript	B-Language
,	O
gfms	O
:	O
Github	B-Application
Flavored	I-Application
Markdown	I-Application
Servermarked	O
:	O
A	O
full-featured	O
markdown	O
parser	O
and	O
compiler	O
,	O
written	O
in	O
JavaScript	B-Language
.	O
</s>
<s>
Built	O
for	O
speed.node-gfm	O
:	O
GitHub	B-Application
flavored	I-Application
markdown	I-Application
to	O
HTML	B-Language
converter	O
PHP	B-Application
,	O
Parsedown	O
:	O
Markdown	O
parser	O
written	O
in	O
PHPCiconia	O
:	O
Markdown	O
parser	O
written	O
in	O
PHP	B-Application
Python	B-Language
,	O
Grip	O
:	O
GitHub	O
Readme	O
Instant	O
Preview	O
Rubygithub-markdown	O
:	O
Self-contained	O
Markdown	O
parser	O
for	O
GitHub	O
—	O
—	O
Proprietary	O
Markdown	O
Perl	B-Language
(	O
originally	O
)	O
,	O
C	B-Language
,	O
peg-markdown	O
is	O
an	O
implementation	O
of	O
markdown	O
in	O
C.Discount	O
is	O
also	O
an	O
implementation	O
of	O
markdown	O
in	O
C	B-Language
.	O
Python	B-Language
,	O
JavaScript	B-Language
,	O
Haskell	B-Language
,	O
Ruby	B-Language
,	O
C#	B-Application
,	O
Java	B-Language
,	O
PHP	B-Application
BSD-style	O
&	O
GPL	B-License
(	O
both	O
)	O
Markdown	O
Extra	O
PHP	B-Application
(	O
originally	O
)	O
,	O
Python	B-Language
,	O
Ruby	B-Language
—	O
—	O
BSD-style	O
&	O
GPL	B-License
(	O
both	O
)	O
MediaWiki	B-Application
Perl	B-Language
,	O
PHP	B-Application
,	O
Haskell	B-Language
,	O
Python	B-Language
—	O
—	O
GNU	B-License
GPL	I-License
MultiMarkdown	B-Language
C	B-Language
,	O
Perl	B-Language
—	O
OPML	B-Application
GPL	B-License
,	O
MIT	B-License
Org-mode	B-Operating_System
Emacs	B-Operating_System
Lisp	I-Operating_System
,	O
Ruby	B-Language
(	O
parser	O
only	O
)	O
,	O
Perl	B-Language
,	O
OCaml	B-Language
Markdown	O
TXT	O
,	O
XOXO	B-General_Concept
,	O
iCalendar	O
,	O
Texinfo	B-Application
,	O
man	B-Protocol
,	O
contrib	O
:	O
groff	B-Application
,	O
s5	B-Application
,	O
deck.js	O
,	O
Confluence	O
Wiki	B-Protocol
Markup	O
,	O
TaskJuggler	B-Language
,	O
RSS	O
,	O
FreeMind	B-Language
GPL	B-License
PmWiki	B-Language
PHP	B-Application
—	O
—	O
GNU	B-License
GPL	I-License
POD	B-Language
Perl	B-Language
—	O
Man	B-Protocol
page	I-Protocol
,	O
plain	O
text	O
Artistic	B-License
License	I-License
,	O
Perl	B-Language
's	O
license	O
reStructuredText	B-Language
Python	B-Language
,	O
Docutils	O
is	O
an	O
implementation	O
of	O
ReStructuredText	B-Language
in	O
PythonSphinx	O
is	O
an	O
implementation	O
of	O
ReStructuredText	B-Language
in	O
Python	B-Language
and	O
Docutils	O
with	O
a	O
number	O
of	O
output	O
format	O
Builders	O
Haskell	B-Language
(	O
Pandoc	B-Language
)	O
,	O
Java	B-Language
,	O
—	O
man	B-Protocol
,	O
S5	B-Application
,	O
Devhelp	B-Language
,	O
QT	B-Language
Help	I-Language
,	O
CHM	B-Protocol
,	O
JSON	B-General_Concept
Public	O
Domain	O
Textile	B-Language
PHP	B-Application
,	O
JavaScript	B-Language
,	O
Java	B-Language
,	O
Perl	B-Language
,	O
Python	B-Language
,	O
Ruby	B-Language
,	O
ASP	B-General_Concept
,	O
C#	B-Application
,	O
Haskell	B-Language
—	O
—	O
Textile	B-Language
License	O
Texy	B-Application
!	I-Application
</s>
<s>
Although	O
usually	O
documented	O
as	O
yielding	O
italic	O
and	O
bold	O
text	O
,	O
most	O
lightweight	B-Protocol
markup	I-Protocol
processors	O
output	O
semantic	O
HTML	B-Language
elements	O
em	O
and	O
strong	O
instead	O
.	O
</s>
<s>
Textile	B-Language
,	O
or	O
allow	O
the	O
user	O
to	O
configure	O
the	O
output	O
easily	O
,	O
e.g.	O
</s>
<s>
Texy	B-Application
.	O
</s>
<s>
+	O
Comparison	O
of	O
text	O
formatting	O
syntax	O
HTML	B-Language
output	O
<strong>strongly emphasized</strong>  <em>emphasized text</em>  <code>code</code>  semantic <b>bold text</b>  <i>italic text</i>  <tt>monospace text</tt>	O
presentational	O
AsciiDoc	B-Language
*	O
bold	O
text*	O
'	O
italic	O
text	O
 '	O
+monospace	O
text+	O
Can	O
double	O
operators	O
to	O
apply	O
formatting	O
where	O
there	O
is	O
no	O
word	O
boundary	O
(	O
for	O
example	O
**	O
b**old	O
t**ex**t	O
yields	O
bold	O
text	O
)	O
.	O
</s>
<s>
_italic	O
text_	O
`monospace	O
text`	O
BBCode	B-Language
[b]bold	O
text[/b]	O
[i]italic	O
text[/i]	O
[code]monospace	O
text[/code]	O
Formatting	O
works	O
across	O
line	O
breaks	O
.	O
</s>
<s>
Jira	B-Protocol
Formatting	I-Protocol
Notation	I-Protocol
*	O
bold	O
text*	O
_italic	O
text_	O
{{	O
monospace	O
text}}	O
Markdown	O
**	O
bold	O
text**	O
*	O
italic	O
text*	O
`monospace	O
text`	O
semantic	O
HTML	B-Language
tags	O
__bold	O
text__	O
_italic	O
text_	O
MediaWiki	B-Application
'''	O
bold	O
text'''	O
''	O
italic	O
text''	O
<code>monospace text</code>	O
mostly	O
resorts	O
to	O
inline	O
HTML	B-Language
Org-mode	B-Operating_System
*	O
bold	O
text*	O
/italic	O
text/	O
=	O
code	O
=	O
~	O
verbatim	O
~	O
PmWiki	B-Language
'''	O
bold	O
text'''	O
''	O
italic	O
text''	O
@	O
@monospace	O
text@@	O
reST	B-Language
**	O
bold	O
text**	O
*	O
italic	O
text*	O
``monospace	O
text``	O
Setext	B-Language
**	O
bold	O
text**	O
~	O
italic	O
text	O
~	O
`monospace	O
text`	O
TextileTextile	O
Syntax	O
*	O
strong*	O
_emphasis_	O
@monospace	O
text@	O
semantic	O
HTML	B-Language
tags	O
**	O
bold	O
text**	O
__italic	O
text__	O
presentational	O
HTML	B-Language
tags	O
Texy	B-Application
!	I-Application
</s>
<s>
**	O
bold	O
text**	O
*	O
italic	O
text*`monospace	O
text`	O
semantic	O
HTML	B-Language
tags	O
by	O
default	O
,	O
optional	O
support	O
for	O
presentational	O
tags	O
//italic	O
text//	O
TiddlyWiki''bold	O
text''//italic	O
text//	O
`monospace	O
text`	O
``monospace	O
text``	O
txt2tags	B-Language
**	O
bold	O
text**	O
//italic	O
text//	O
``monospace	O
text``	O
POD	B-Language
Bxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx1	O
Indented	O
text	O
is	O
also	O
shown	O
as	O
monospaced	O
code	O
.	O
</s>
<s>
In	O
HTML	B-Language
,	O
text	O
is	O
emphasized	O
with	O
the	O
<em> and <strong> element types, whereas <i> and <b>	O
traditionally	O
mark	O
up	O
text	O
to	O
be	O
italicized	O
or	O
bold-faced	O
,	O
respectively	O
.	O
</s>
<s>
Microsoft	B-Application
Word	I-Application
and	O
Outlook	O
,	O
and	O
accordingly	O
other	O
word	O
processors	O
and	O
mail	O
clients	O
that	O
strive	O
for	O
a	O
similar	O
user	O
experience	O
,	O
support	O
the	O
basic	O
convention	O
of	O
using	O
asterisks	O
for	O
boldface	O
and	O
underscores	O
for	O
italic	O
style	O
.	O
</s>
<s>
+	O
Italic	O
type	O
or	O
normal	O
emphasis	O
Code	O
AsciiDoc	B-Language
ATX	B-Language
Creole	O
Jira	B-Protocol
Markdown	O
MediaWiki	B-Application
Org-mode	B-Operating_System
PmWiki	B-Language
reST	B-Language
Setext	B-Language
Slack	B-Protocol
Textile	B-Language
Texy	B-Application
!	I-Application
</s>
<s>
TiddlyWiki	B-Language
txt2tags	B-Language
WhatsApp	B-Application
*	O
italic*	O
**	O
italic**	O
_italic_	O
__italic__	O
'	O
italic	O
 '	O
''	O
italic''	O
/italic/	O
//italic//	O
~	O
italic	O
~	O
</s>
<s>
+	O
Bold	O
face	O
or	O
strong	O
emphasis	O
Code	O
AsciiDoc	B-Language
ATX	B-Language
Creole	O
Jira	B-Protocol
Markdown	O
MediaWiki	B-Application
Org-mode	B-Operating_System
PmWiki	B-Language
reST	B-Language
Setext	B-Language
Slack	B-Protocol
Textile	B-Language
Texy	B-Application
!	I-Application
</s>
<s>
In	O
HTML	B-Language
,	O
removed	O
or	O
deleted	O
and	O
inserted	O
text	O
is	O
marked	O
up	O
with	O
the	O
<del> and <ins>	O
element	O
types	O
,	O
respectively	O
.	O
</s>
<s>
AsciiDoc	B-Language
,	O
ATX	B-Language
,	O
Creole	O
,	O
MediaWiki	B-Application
,	O
PmWiki	B-Language
,	O
reST	B-Language
,	O
Slack	B-Protocol
,	O
Textile	B-Language
,	O
Texy	B-Application
!	I-Application
</s>
<s>
and	O
WhatsApp	B-Application
do	O
not	O
support	O
dedicated	O
markup	O
for	O
underlining	O
text	O
.	O
</s>
<s>
Textile	B-Language
does	O
,	O
however	O
,	O
support	O
insertion	O
via	O
the	O
+inserted+	O
syntax	O
.	O
</s>
<s>
AsciiDoc	B-Language
,	O
ATX	B-Language
,	O
Creole	O
,	O
MediaWiki	B-Application
,	O
PmWiki	B-Language
,	O
reST	B-Language
,	O
Setext	B-Language
and	O
Texy	B-Application
!	I-Application
</s>
<s>
HTML	B-Language
offers	O
the	O
semantic	O
<code> and the deprecated, presentational <tt>	O
element	O
types	O
for	O
this	O
task	O
.	O
</s>
<s>
+	O
Monospaced	O
font	O
,	O
teletype	O
text	O
or	O
code	O
Code	O
AsciiDoc	B-Language
ATX	B-Language
Creole	O
Gemtext	O
Jira	B-Protocol
Markdown	O
Org-mode	B-Operating_System
PmWiki	B-Language
reST	B-Language
Slack	B-Protocol
Textile	B-Language
Texy	B-Application
!	I-Application
</s>
<s>
TiddlyWiki	B-Language
txt2tags	B-Language
WhatsApp	B-Application
@code	O
@	O
@	O
@code	O
@@	O
`code`	O
``code``	O
```code```	O
=	O
code	O
=	O
~	O
code	O
~	O
+code+	O
++code++	O
 {  { code }  } 	O
 {  {  { code }  }  } 	O
|code|	O
;;	O
code	O
;;	O
</s>
<s>
Mediawiki	B-Application
and	O
Gemtext	O
do	O
not	O
provide	O
lightweight	B-Protocol
markup	I-Protocol
for	O
inline	O
code	O
spans	O
.	O
</s>
<s>
Most	O
LMLs	O
follow	O
one	O
of	O
two	O
styles	O
for	O
headings	O
,	O
either	O
Setext-like	O
underlines	O
or	O
atx-like	O
line	O
markers	O
,	O
or	O
they	O
support	O
both	O
.	O
</s>
<s>
min	O
length	O
Markdown	O
1	O
Setext	B-Language
AsciiDoc	B-Language
2	O
Texy	B-Application
!	I-Application
</s>
<s>
+	O
Suffix	O
Levels	O
Indentation	O
AsciiDoc	B-Language
1	O
–	O
6	O
Creole	O
1	O
–	O
6	O
Gemtext	O
1	O
–	O
3	O
MediaWiki	B-Application
1	O
–	O
6	O
TiddlyWiki	B-Language
1	O
–	O
6	O
txt2tags	B-Language
1	O
–	O
6	O
Markdown	O
1	O
–	O
6	O
Texy	B-Application
!	I-Application
</s>
<s>
Org-mode	B-Operating_System
supports	O
indentation	O
as	O
a	O
means	O
of	O
indicating	O
the	O
level	O
.	O
</s>
<s>
BBCode	B-Language
does	O
not	O
support	O
section	O
headings	O
at	O
all	O
.	O
</s>
<s>
POD	B-Language
and	O
Textile	B-Language
choose	O
the	O
HTML	B-Language
convention	O
of	O
numbered	O
heading	O
levels	O
instead	O
.	O
</s>
<s>
=	O
head2	O
Level	O
2	O
Heading	O
Textile	B-Language
,	O
Jirah1	O
.	O
</s>
<s>
Microsoft	B-Application
Word	I-Application
supports	O
auto-formatting	O
paragraphs	O
as	O
headings	O
if	O
they	O
do	O
not	O
contain	O
more	O
than	O
a	O
handful	O
of	O
words	O
,	O
no	O
period	O
at	O
the	O
end	O
and	O
the	O
user	O
hits	O
the	O
enter	O
key	O
twice	O
.	O
</s>
<s>
wikis	B-Protocol
or	O
code	O
documentation	O
,	O
may	O
automatically	O
generate	O
named	O
anchors	O
(	O
for	O
headings	O
,	O
functions	O
etc	O
.	O
)	O
</s>
<s>
+	O
Hyperlink	O
syntax	O
Languages	O
Basic	O
syntax	O
Text	O
syntax	O
Title	O
syntax	O
BBCode	B-Language
,	O
Creole	O
,	O
MediaWiki	B-Application
,	O
PmWiki	B-Language
http://example.com	O
Textile	B-Language
"	O
Text	O
"	O
:http://example.com	O
"	O
Text	O
(	O
Title	O
)	O
"	O
:http://example.com	O
Texy	B-Application
!	I-Application
</s>
<s>
Gemtext	O
and	O
setext	B-Language
links	O
must	O
be	O
on	O
a	O
line	O
by	O
themselves	O
,	O
they	O
cannot	O
be	O
used	O
inline	O
.	O
</s>
<s>
+	O
Reference	O
syntax	O
Languages	O
Text	O
syntax	O
Title	O
syntax	O
AsciiDoc	B-Language
…	O
 [  [ id ]  ] 	O
…	O
</s>
<s>
 [ Text ] 	O
:	O
http://example.com	O
"	O
Title	O
"	O
reStructuredText	B-Language
…	O
Name_	O
…	O
</s>
<s>
..	O
_Name	O
:	O
http://example.com	O
setext	B-Language
…	O
Link_name_	O
…	O
</s>
<s>
^	O
..	O
_Link_name	O
URL	O
Textile	B-Language
…	O
"	O
Text	O
"	O
:alias	O
…	O
</s>
<s>
[	O
alias	O
(	O
Title	O
)	O
]	O
http://example.com	O
Texy	B-Application
!	I-Application
</s>
<s>
Org-mode	B-Operating_System
'	O
s	O
normal	O
link	O
syntax	O
does	O
a	O
text	O
search	O
of	O
the	O
file	O
.	O
</s>
<s>
HTML	B-Language
requires	O
an	O
explicit	O
element	O
for	O
the	O
list	O
,	O
specifying	O
its	O
type	O
,	O
and	O
one	O
for	O
each	O
list	O
item	O
,	O
but	O
most	O
lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
need	O
only	O
different	O
line	O
prefixes	O
for	O
the	O
bullet	O
points	O
or	O
enumerated	O
items	O
.	O
</s>
<s>
Microsoft	B-Application
Word	I-Application
automatically	O
converts	O
paragraphs	O
that	O
start	O
with	O
an	O
asterisk	O
*	O
,	O
hyphen-minus	O
-	O
or	O
greater-than	O
bracket	O
>	O
followed	O
by	O
a	O
space	O
or	O
horizontal	O
tabulator	O
as	O
bullet	O
list	O
items	O
.	O
</s>
<s>
Slack	B-Protocol
assists	O
the	O
user	O
in	O
entering	O
enumerated	O
and	O
bullet	O
lists	O
,	O
but	O
does	O
not	O
actually	O
format	O
them	O
as	O
such	O
,	O
i.e.	O
</s>
<s>
The	O
following	O
lightweight	B-Protocol
markup	I-Protocol
languages	I-Protocol
,	O
while	O
similar	O
to	O
some	O
of	O
those	O
already	O
mentioned	O
,	O
have	O
not	O
yet	O
been	O
added	O
to	O
the	O
comparison	O
tables	O
in	O
this	O
article	O
:	O
</s>
