What is the significance of the term "unless he has elected otherwise" in this context according to this provision?
The term "unless he has elected otherwise" in this context according to this provision allows the Auditor-General of India holding office immediately before the commencement of the Constitution to choose not to become the Comptroller and Auditor-General of India upon the commencement of the Constitution. If they do not make such an election, they will automatically become the Comptroller and Auditor-General of India and be entitled to the salaries, leave of absence rights, and pension provided for in article 148(3).