Module
Clears a lesson's completion for the signed-in learner — their own undo.
Saves the signed-in learner's playback position for a lesson.
Records the lesson the signed-in learner opened last in its course, enrolling them in that course; a course the catalog does not serve records nothing.
Records the tickets of lessons that count as complete for the signed-in learner; lessons already holding one are skipped.
Records the claim of a module's prize for the signed-in learner.
Enrolls the signed-in learner in a course the catalog serves; answers
{ enrolled: false } for any other slug.
Records a lesson as complete for the signed-in learner.