Filter Hook: Filter the default return value of dozent_has_single_template_in_theme() function

Filter Hook: Filter the return value of dozent_course_is_closed(); function

Function: Determine if a course is closed

Filter Hook: Filter the return value of dozent_course_is_free(); function

Function: Determine if a course is free

Filter Hook: Filter the return value of dozent_course_is_protected(); function

Function: Determine if a course is protected

Filter Hook: Filter the return value of dozent_course_is_public(); function

Function: Determine if a course is publicly accessible

Function: Determines whether the query is for an existing dozent user profile page.