Since Moodle 4.4 some course section editing global functions have been moved to format actions (core_courseformat/sectionactions). However, many are still in course/lib.php and should be moved.

Some of the functions to migrate are:

• course_set_marker
•  set_section_visible

• course_add_cm_to_section
• move_section_to

This issue also includes adding deprecation messages to the global functions. However, if for some reason that was not possible, it can wait until MDL-80482.