Note: You are currently viewing documentation for Moodle 2.6. Up-to-date documentation for the latest stable version of Moodle may be available here: Events.
An index of system events documentation pages.
The general format of a system event name is a/b:c, where a is the area of Moodle, generally (i.e. like a path), b is the actual plugin name and c is the event. a is restricted by not having punctuation so that's why grade/export became gradeexport.