DataMapper-ORM bug tracker - icon() function in views/bugs/list.php

[eluser]jjDeveloper[/eluser]
I am currently looking at DataMapper ORM and its example application and was wondering if someone could tell me where this "icon()" function is being defined as i seem to be lost trying to find information on the web regarding it.

Here is a snippet form the file in views/bugs/list.php

Code:

<td class="buttons">
   &lt;?php echo icon('view', 'View this Bug'); ?&gt;

if anybody could provide some insight I would really appreciate it.

Cheers