Editing Help:Editing (section)

===Character formatting===
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! What it looks like
! What you type
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''Emphasize'', '''strongly''', '''''very strongly'''''.
* These are double, triple, and quintuple apostrophes (single-quote marks), not double-quote marks.
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<pre><nowiki>
''Emphasize'', '''strongly''', '''''very strongly'''''.
</nowiki></pre>
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<math>\sin x + \ln y</math><br>
sin''x'' + ln''y''
<!-- no space between roman "sin" and italic "x" -->

<math>\mathbf{x} = 0</math><br>
'''x''' = 0

Ordinary text should use [[#emph|wiki markup for emphasis]], and should not use <code>&lt;i&gt;</code> or <code>&lt;b&gt;</code>.  However, mathematical formulas often use italics, and sometimes use bold, for reasons unrelated to emphasis.  Complex formulas should use [[Help:Formula|<code>&lt;math&gt;</code> markup]], and simple formulas may use <code>&lt;math&gt;</code>; or <code>&lt;i&gt;</code> and <code>&lt;b&gt;</code>; or <code><nowiki>''</nowiki></code> and <code><nowiki>'''</nowiki></code>.  According to [[Wikipedia:WikiProject Mathematics#Italicization and bolding|WikiProject Mathematics]], wiki markup is preferred over HTML markup like <code>&lt;i&gt;</code> and <code>&lt;b&gt;</code>.
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<pre><nowiki>
<math>\sin x + \ln y</math>
sin''x'' + ln''y''

<math>\mathbf{x} = 0</math>
'''x''' = 0
</nowiki></pre>
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A typewriter font for <tt>monospace text</tt>
or for computer code: <code>int main()</code>

* For semantic reasons, using <code>&lt;code&gt;</code> where applicable is preferable to using <code>&lt;tt&gt;</code>.
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<pre><nowiki>
A typewriter font for <tt>monospace text</tt>
or for computer code: <code>int main()</code>
</nowiki></pre>
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You can use <small>small text</small> for captions.
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<pre><nowiki>
You can use <small>small text</small> for captions.
</nowiki></pre>
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You can <s>strike out deleted material</s>
and <u>underline new material</u>.

You can also mark <del>deleted material</del> and
<ins>inserted material</ins> using logical markup
rather than visual markup.

* When editing regular Wikipedia articles, just make your changes and do not mark them up in any special way.
* When editing your own previous remarks in talk pages, it is sometimes appropriate to mark up deleted or inserted material.
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<pre><nowiki>
You can <s>strike out deleted material</s>
and <u>underline new material</u>.

You can also mark <del>deleted material</del> and
<ins>inserted material</ins> using logical markup
rather than visual markup.
</nowiki></pre>
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'''Diacritical marks:'''
<br/>
À Á Â Ã Ä Å <br/>
Æ Ç È É Ê Ë <br/>
Ì Í
Î Ï Ñ Ò <br/>
Ó Ô Õ
Ö Ø Ù <br/>
Ú Û Ü ß
à á <br/>
â ã ä å æ
ç <br/>
è é ê ë ì í<br/>
î ï ñ ò ó ô <br/>
&oelig; õ
ö ø ù ú <br/>
û ü ÿ

* See [[meta:Help:Special characters|special characters]].
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<br/>
<pre><nowiki>
&amp;Agrave; &amp;Aacute; &amp;Acirc; &amp;Atilde; &amp;Auml; &amp;Aring; 
&amp;AElig; &amp;Ccedil; &amp;Egrave; &amp;Eacute; &amp;Ecirc; &amp;Euml; 
&amp;Igrave; &amp;Iacute; &amp;Icirc; &amp;Iuml; &amp;Ntilde; &amp;Ograve; 
&amp;Oacute; &amp;Ocirc; &amp;Otilde; &amp;Ouml; &amp;Oslash; &amp;Ugrave; 
&amp;Uacute; &amp;Ucirc; &amp;Uuml; &amp;szlig; &amp;agrave; &amp;aacute; 
&amp;acirc; &amp;atilde; &amp;auml; &amp;aring; &amp;aelig; &amp;ccedil; 
&amp;egrave; &amp;eacute; &amp;ecirc; &amp;euml; &amp;igrave; &amp;iacute;
&amp;icirc; &amp;iuml; &amp;ntilde; &amp;ograve; &amp;oacute; &amp;ocirc; 
&amp;oelig; &amp;otilde; &amp;ouml; &amp;oslash; &amp;ugrave; &amp;uacute; 
&amp;ucirc; &amp;uuml; &amp;yuml;
</nowiki></pre>
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'''Punctuation:'''
<br/>
¿ ¡ § ¶<br/>
&dagger; &Dagger; &bull; &ndash; &mdash;<br/>
&lsaquo; &rsaquo; « »<br/>
&lsquo; &rsquo; &ldquo; &rdquo;
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<br/>
<pre><nowiki>
&amp;iquest; &amp;iexcl; &amp;sect; &amp;para;
&amp;dagger; &amp;Dagger; &amp;bull; &amp;ndash; &amp;mdash;
&amp;lsaquo; &amp;rsaquo; &amp;laquo; &amp;raquo;
&amp;lsquo; &amp;rsquo; &amp;ldquo; &amp;rdquo;
</nowiki></pre>
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'''Commercial symbols:'''
<br/>
&trade; © ® ¢ &euro; ¥<br/>
£ ¤
|
<br/>
<pre><nowiki>
&amp;trade; &amp;copy; &amp;reg; &amp;cent; &amp;euro; &amp;yen; 
&amp;pound; &amp;curren;
</nowiki></pre>
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'''Subscripts:'''
<br/>
x<sub>1</sub> x<sub>2</sub> x<sub>3</sub> or
<br/>
x&#8320; x&#8321; x&#8322; x&#8323; x&#8324;
<br/>
x&#8325; x&#8326; x&#8327; x&#8328; x&#8329;

'''Superscripts:'''
<br/>
x<sup>1</sup> x<sup>2</sup> x<sup>3</sup> or
<br/>
x&#8304; x&sup1; x&sup2; x&sup3; x&#8308;
<br/>
x&#8309; x&#8310; x&#8311; x&#8312; x&#8313;

*The latter methods of sub/superscripting cannot be used in the most general context, as they rely on Unicode support which may not be present on all users' machines. For the 1-2-3 superscripts, it is nevertheless preferred when possible (as with units of measurement) because most browsers have an easier time formatting lines with it.

&epsilon;<sub>0</sub> =
8.85 &times; 10<sup>&minus;12</sup>
C&sup2; / J m.

1 [[hectare]] = [[1 E4 m&sup2;]]
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<br/>
<pre><nowiki>
x<sub>1</sub> x<sub>2</sub> x<sub>3</sub> or
<br/>
x&amp;#8320; x&amp;#8321; x&amp;#8322; x&amp;#8323; x&amp;#8324;
<br/>
x&amp;#8325; x&amp;#8326; x&amp;#8327; x&amp;#8328; x&amp;#8329;
</nowiki></pre>

<pre><nowiki>
x<sup>1</sup> x<sup>2</sup> x<sup>3</sup> or
<br/>
x&amp;#8304; x&amp;sup1; x&amp;sup2; x&amp;sup3; x&amp;#8308;
<br/>
x&amp;#8309; x&amp;#8310; x&amp;#8311; x&amp;#8312; x&amp;#8313;

&amp;epsilon;<sub>0</sub> =
8.85 &amp;times; 10<sup>&amp;minus;12</sup>
C&amp;sup2; / J m.

1 [[hectare]] = [[1 E4 m&amp;sup2;]]
</nowiki></pre>
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'''Greek characters:'''
<br/>
&alpha; &beta; &gamma; &delta; &epsilon; &zeta;<br/>
&eta; &theta; &iota; &kappa; &lambda; &mu; &nu;<br/>
&xi; &omicron; &pi; &rho; &sigma; &sigmaf;<br/>
&tau; &upsilon; &phi; &chi; &psi; &omega;<br/>
&Gamma; &Delta; &Theta; &Lambda; &Xi; &Pi;<br/>
&Sigma; &Phi; &Psi; &Omega;
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<br/>
<pre><nowiki>
&amp;alpha; &amp;beta; &amp;gamma; &amp;delta; &amp;epsilon; &amp;zeta; 
&amp;eta; &amp;theta; &amp;iota; &amp;kappa; &amp;lambda; &amp;mu; &amp;nu; 
&amp;xi; &amp;omicron; &amp;pi; &amp;rho; &amp;sigma; &amp;sigmaf;
&amp;tau; &amp;upsilon; &amp;phi; &amp;chi; &amp;psi; &amp;omega;
&amp;Gamma; &amp;Delta; &amp;Theta; &amp;Lambda; &amp;Xi; &amp;Pi; 
&amp;Sigma; &amp;Phi; &amp;Psi; &amp;Omega;
</nowiki></pre>
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'''Mathematical characters:'''
<br/>
&int; &sum; &prod; &radic; &minus; &plusmn; &infin;<br/>
&asymp; &prop; &equiv; &ne; &le; &ge;<br/>
&times; &middot; &divide; &part; &prime; &Prime;<br/>
&nabla; &permil; &deg; &there4; &alefsym; &oslash;<br/>
&isin; &notin; &cap; &cup; &sub; &sup; &sube; &supe;<br/>
&not; &and; &or; &exist; &forall; &rArr; &hArr;<br/>
&rarr; &harr;<br/>
* See also [[Wikipedia:WikiProject Mathematics|WikiProject Mathematics]].
|
<br/>
<pre><nowiki>
&amp;int; &amp;sum; &amp;prod; &amp;radic; &amp;minus; &amp;plusmn; &amp;infin;
&amp;asymp; &amp;prop; &amp;equiv; &amp;ne; &amp;le; &amp;ge;
&amp;times; &amp;middot; &amp;divide; &amp;part; &amp;prime; &amp;Prime;
&amp;nabla; &amp;permil; &amp;deg; &amp;there4; &amp;alefsym; &amp;oslash;
&amp;isin; &amp;notin; &amp;cap; &amp;cup; &amp;sub; &amp;sup; &amp;sube; &amp;supe;
&amp;not; &amp;and; &amp;or; &amp;exist; &amp;forall; &amp;rArr; &amp;hArr;
&amp;rarr; &amp;harr;
</nowiki></pre>
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'''Spacing in simple math formulas:'''
<br/>
Obviously, ''x''&sup2;&nbsp;&ge;&nbsp;0 is true.
*To space things out without allowing line breaks to interrupt the formula, use non-breaking spaces: <tt>&amp;nbsp;</tt>.
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<br/>
<pre><nowiki>
Obviously, ''x''&amp;sup2;&amp;nbsp;&amp;ge;&amp;nbsp;0 is true.
</nowiki></pre>
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'''Complicated formulas:'''
<br/>
: <math>\sum_{n=0}^\infty \frac{x^n}{n!}</math>
* See [[Help:Formula]] for how to use <tt>&lt;math></tt>.
* A formula displayed on a line by itself should probably be indented by using the colon (:) character.
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<br/>
<pre><nowiki>
: <math>\sum_{n=0}^\infty \frac{x^n}{n!}</math>
</nowiki></pre>
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'''Suppressing interpretation of markup:'''
<br/>
<nowiki>Link &rarr; (''to'') the [[Wikipedia FAQ]]</nowiki>
* Used to show literal data that would otherwise have special meaning.
* Escape all wiki markup, including that which looks like HTML tags.
* Does not escape HTML character references.
* To escape HTML character references such as <tt>&amp;rarr;</tt> use <tt>&amp;amp;rarr;</tt>
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<br/>
<pre><nowiki>
&lt;nowiki>Link &amp;rarr; (''to'') 
the [[Wikipedia FAQ]]&lt;/nowiki>
</nowiki></pre>
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'''Commenting page source:'''
<br/>
''not shown when viewing page''
* Used to leave comments in a page for future editors.
* Note that most comments should go on the appropriate [[Wikipedia:Talk page|Talk page]].
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<br/>
<pre><nowiki>
&lt;!-- comment here -->
</nowiki></pre>
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''(see also: [[Chess symbols in Unicode]])''