View source for Template:Unset param

<onlyinclude>{{{{{{1}}}{{!}}<span class="error">{{#ifeq:{{{2|no}}}|no|[{{{1}}}] not set!|{{{2}}}}}</span>}}}</onlyinclude>
==Demos==
<p>{{Unset param|rarity}}</p>
<p>{{Unset param|title|Page author omitted the title. Please nag them.}}</p>

==Parameters==
# symbolic name of the template parameter we want to use here, or alert all users to the fact of its absence
# specific error message to display; if blank, use "[{{{1}}}] not set!"