Opaque question type
From MoodleDocs
Installing the Opaque question type
- Download it from http://moodle.org/mod/data/view.php?d=13&rid=798.
- Unzip.
- Copy the opaque folder into the question/type folder of your Moodle install.
- Go to http://myserver/admin/index.php in your browser to complete the installation.
Configuring the Question type
- Visit http://myserver/question/type/opaque/engines.php.
- Click 'Add another engine'.
- ... to be continued.