Add tpl to HTML content type on Zend Studio Form Eclipse

The smarty deafult tempalte file type named "tpl" hasn't been supported by Zend Studio for Eclipse 6.1. So, you need to setup this content type to html. the solution is the following:

1 Open Preferences
2 Click HTML in General->Appearance->Content Type
3 Add "*.tpl" to File associations
4 Clink OK