This template can be used to display an emoticon or mini icon. It is used like this:
{{E|:-)}}
For more information, please visit Help:Emoticons.

If you want another emoticon added, post a request to the talk page, giving the source of your image (required, even if you have already uploaded it) and the character sequence to invoke it (for example, if there were not already a wink emoticon, you would probably suggest ";)" as the sequence, so that {‍{e|;)}} would give ).