Para formatear texto en el foro he utilizado un sistema de marcado que se llama Textile de textile.sitemonks.com/. Funciona de forma muy similar al de Wikipedia, de hecho, el marcador de formato de Wikipedia es una versión de Textile.

Se puede obtener información de textile en:

Comentarios del código fuente

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U S A G E

Block modifier syntax:

    Header: h(1-6).
	Paragraphs beginning with 'hn. ' (where n is 1-6) are wrapped in header tags.
	Example: h1. Header... -> <h1>Header...</h1>

	Paragraph: p. (also applied by default)
	Example: p. Text -> <p>Text</p>

	Blockquote: bq.
	Example: bq. Block quotation... -> <blockquote>Block quotation...</blockquote>

	Blockquote with citation: bq.:http://citation.url
	Example: bq.:http://textism.com/ Text...
	->	<blockquote cite="http://textism.com">Text...</blockquote>

	Footnote: fn(1-100).
	Example: fn1. Footnote... -> <p id="fn1">Footnote...</p>

	Numeric list: #, ##
	Consecutive paragraphs beginning with # are wrapped in ordered list tags.
	Example: <ol><li>ordered list</li></ol>

	Bulleted list: *, **
	Consecutive paragraphs beginning with * are wrapped in unordered list tags.
	Example: <ul><li>unordered list</li></ul>

	Definition list:
		Terms ;, ;;
		Definitions :, ::
	Consecutive paragraphs beginning with ; or : are wrapped in definition list tags.
	Example: <dl><dt>term</dt><dd>definition</dd></dl>

Phrase modifier syntax:

		   _emphasis_	->	 <em>emphasis</em>
		   __italic__	->	 <i>italic</i>
			 *strong*	->	 <strong>strong</strong>
			 **bold**	->	 <b>bold</b>
		 ??citation??	->	 <cite>citation</cite>
	   -deleted text-	->	 <del>deleted</del>
	  +inserted text+	->	 <ins>inserted</ins>
		^superscript^	->	 <sup>superscript</sup>
		  ~subscript~	->	 <sub>subscript</sub>
			   @code@	->	 <code>computer code</code>
		  %(bob)span%	->	 <span class="bob">span</span>

		==notextile==	->	 leave text alone (do not format)

	   "linktext":url	->	 <a href="url">linktext</a>
 "linktext(title)":url	->	 <a href="url" title="title">linktext</a>
            "$":url  ->  <a href="url">url</a>
     "$(title)":url  ->  <a href="url" title="title">url</a>

		   !imageurl!	->	 <img src="imageurl" />
	!imageurl(alt text)!	->	 <img src="imageurl" alt="alt text" />
	!imageurl!:linkurl	->	 <a href="linkurl"><img src="imageurl" /></a>

ABC(Always Be Closing)	->	 <acronym title="Always Be Closing">ABC</acronym>


Linked Notes:
============

	Allows the generation of an automated list of notes with links.

	Linked notes are composed of three parts, a set of named _definitions_, a set of
	_references_ to those definitions and one or more _placeholders_ indicating where
	the consolidated list of notes is to be placed in your document.

	Definitions.
	-----------

	Each note definition must occur in its own paragraph and should look like this...

	note#mynotelabel. Your definition text here.

	You are free to use whatever label you wish after the # as long as it is made up
	of letters, numbers, colon(:) or dash(-).

	References.
	----------

	Each note reference is marked in your text like this[#mynotelabel] and
	it will be replaced with a superscript reference that links into the list of
	note definitions.

	List Placeholder(s).
	-------------------

	The note list can go anywhere in your document. You have to indicate where
	like this...

	notelist.

	notelist can take attributes (class#id) like this: notelist(class#id).

	By default, the note list will show each definition in the order that they
	are referenced in the text by the _references_. It will show each definition with
	a full list of backlinks to each reference. If you do not want this, you can choose
	to override the backlinks like this...

	notelist(class#id)!.    Produces a list with no backlinks.
	notelist(class#id)^.    Produces a list with only the first backlink.

	Should you wish to have a specific definition display backlinks differently to this
	then you can override the backlink method by appending a link override to the
	_definition_ you wish to customise.

	note#label.    Uses the citelist's setting for backlinks.
	note#label!.   Causes that definition to have no backlinks.
	note#label^.   Causes that definition to have one backlink (to the first ref.)
	note#label*.   Causes that definition to have all backlinks.

	Any unreferenced notes will be left out of the list unless you explicitly state
	you want them by adding a '+'. Like this...

	notelist(class#id)!+. Giving a list of all notes without any backlinks.

	You can mix and match the list backlink control and unreferenced links controls
	but the backlink control (if any) must go first. Like so: notelist^+. , not
	like this: notelist+^.

	Example...
		Scientists say[#lavader] the moon is small.

		note#other. An unreferenced note.

		note#lavader(myliclass). "Proof":url of a small moon.

		notelist(myclass#myid)+.

		Would output (the actual IDs used would be randomised)...

		<p>Scientists say<sup><a href="#def_id_1" id="ref_id_1a">1</sup> the moon is small.</p>

		<ol class="myclass" id="myid">
			<li class="myliclass"><a href="#ref_id_1a"><sup>a</sup></a><span id="def_id_1"> </span><a href="url">Proof</a> of a small moon.</li>
			<li>An unreferenced note.</li>
		</ol>

		The 'a b c' backlink characters can be altered too.
		For example if you wanted the notes to have numeric backlinks starting from 1:

		notelist:1.

Table syntax:

	Simple tables:

		|a|simple|table|row|
		|And|Another|table|row|
		|With an||empty|cell|

		|=. My table caption goes here
		|_. A|_. table|_. header|_.row|
		|A|simple|table|row|

	Tables with attributes:

		table{border:1px solid black}. My table summary here
		{background:#ddd;color:red}. |{}| | | |

	To specify thead / tfoot / tbody groups, add one of these on its own line
	above the row(s) you wish to wrap (you may specify attributes before the dot):

		|^.     # thead
		|-.     # tbody
		|~.     # tfoot

	Column groups:

		|:\3. 100

		Becomes:
			<colgroup span="3" width="100"></colgroup>

		You can omit either of the \N or width values. You may also
		add cells after the colgroup definition to specify span/width/attributes:

		|:\5. 50 |(firstcol). |\2. 250||300|

		Becomes:
			<colgroup span="5" width="50">
				<col class="firstcol" />
				<col span="2" width="250" />
				<col />
				<col width="300" />
			</colgroup>

Applying Attributes:

	Most anywhere Textile code is used, attributes such as arbitrary css style,
	css classes, and ids can be applied. The syntax is fairly consistent.

	The following characters quickly alter the alignment of block elements:

		<  ->  left align	 ex. p<. left-aligned para
		>  ->  right align		 h3>. right-aligned header 3
		=  ->  centred			 h4=. centred header 4
		<> ->  justified		 p<>. justified paragraph

	These will change vertical alignment in table cells:

		^  ->  top		   ex. |^. top-aligned table cell|
		-  ->  middle		   |-. middle aligned|
		~  ->  bottom		   |~. bottom aligned cell|

	Plain (parentheses) inserted between block syntax and the closing dot-space
	indicate classes and ids:

		p(hector). paragraph -> <p class="hector">paragraph</p>

		p(#fluid). paragraph -> <p id="fluid">paragraph</p>

		(classes and ids can be combined)
		p(hector#fluid). paragraph -> <p class="hector" id="fluid">paragraph</p>

	Curly {brackets} insert arbitrary css style

		p{line-height:18px}. paragraph -> <p style="line-height:18px">paragraph</p>

		h3{color:red}. header 3 -> <h3 style="color:red">header 3</h3>

	Square [brackets] insert language attributes

		p[no]. paragraph -> <p lang="no">paragraph</p>

		%[fr]phrase% -> <span lang="fr">phrase</span>

	Usually Textile block element syntax requires a dot and space before the block
	begins, but since lists don't, they can be styled just using braces

		#{color:blue} one  ->  <ol style="color:blue">
		# big					<li>one</li>
		# list					<li>big</li>
								<li>list</li>
							   </ol>

	Using the span tag to style a phrase

		It goes like this, %{color:red}the fourth the fifth%
			  -> It goes like this, <span style="color:red">the fourth the fifth</span>