[certificate_student_name] : Displays Students Name
2. [certificate_course] : Displays Course Name
3. [certificate_student_marks] : Displays Students Marks in Course
4. [certificate_student_date]: Displays date on which Certificate was awarded to the Student
5. [certificate_student_email]: Displays registered email of the Student
6. [certificate_code]: Generates unique code for Student which can be validated from Certificate page.
7. [course_completion_date]: Displays course completion date from course activity.