What do you understand from the following, describe all in detail, and ADD the specimens wherever applicable

1. Audit Engagement Letter

2. Audit Appointment Letter

3. Audit Planning and Initial Assessments / Walk Through in Audits

4. Audit Verification and Six Point Technique

5. Vouching the first step towards substantial analysis

6. Verification of Assets, Verification of Liabilities and Revenue Accounts

7. Professional Ethics for CPAs and External Audits ( All aspects )

8. Code of Corporate Governance in Saudi Arabia

• do not forget to have references of all materials and write the references at the end )