Name
..
lesson_added
lesson_added_into_section
lesson_in_section_renamed
lesson_removed
lesson_removed_from_section
lesson_renamed
lessons_rearranged
lessons_rearranged_in_section
section_added
section_removed
section_renamed
sections_rearranged
task_added
task_file_in_section_text_changed
task_file_renamed
task_file_text_changed
task_in_section_added
task_removed
task_renamed
task_text_changed
tests_added
theory_task_added
theory_task_file_changed
theory_task_text_changed
update_checker