View source for Pikipedia:Template guidelines

===Skeleton===
For templates that have parameters, a template template (a template skeleton) section should be created. This is simply a snippet of MediaWiki markup surrounded by <code><nowiki><pre></nowiki></code> tags, so that editors who want to add the template to articles can just copy-paste the snippet and replace the values with their own. Value placeholders should start with &lt; and end with &gt;. Example of a template skeleton:
<pre>
{{example | <parameter 1> | <parameter 2>}}
</pre>