The structured feedback plugin enables teachers to define any number of criteria on which to provide individual feedback comments for a student's assignment submission. Criteria are configured in a dedicated 'Feedback criteria' section of the standard assignment config form, and the plugin is enable/disabled automatically depending on whether any criteria have been defined.
The configured 'criteria set' can then be saved for easy reuse in other assignments. Given the appropriate permissions the teacher can also choose to share their saved criteria sets with other teachers within the same Moodle site. A simple AJAX interface is provided for teachers to manage their saved criteria sets, all accessed from within the assignment config form.