learndash_course_lessons_advance_progress_page
Filter Hook: Filters whether to redirect the user to the next available lesson page in the course.
@package: LearnDashCourse
learndash_course_join_redirect
Filter Hook: Filters URL that a user should be redirected to after joining a course.
is_quiz_accessable_legacy()
Function: Checks if the quiz is accessible to the user (legacy).