Editing Help:A quick guide to templates (section)

===Parameters===
Templates can have parameters which the page can dynamically incorporate into the transcluded page. Instead of just the template name, like <code><nowiki>{{foo}}</nowiki></code>, an embedded template tag would have additional values separated by [[vertical bar]]s (|), e.g. <code><nowiki>{{foo|July|lc=yes}}</nowiki></code>. Here <code>July</code> is the value of the first unnamed parameter; <code>yes</code> is the value of the named parameter <code>lc</code>. Writing the template page for a template with parameters is more complicated than for a template with no parameters. See [[Help:Template]].