Note:

If you want to create a new page for developers, you should create it on the Moodle Developer Resource site.

Java settings

Filter

Language folder

Add language folder: \lang\en\filter_nanogong.php with the following content:

$string['filtername'] = 'NanoGong';

Filter function

The filter function is wrapped inside a class:

class filter_nanogong extends moodle_text_filter {

   function filter($text, array $options = array()){
   ...
   }

}

Note
The callback function has to be outside this class definition!

See also

Migrating to Moodle 2.0
Forums
NanoGong documentation