What is the purpose of sub-paragraph (3) and (4) according to this context?
According to the context, sub-paragraph (3) and (4) are referring to changes made in salaries for certain judges due to the commencement of the Constitution (Seventh Amendment) Act, 1956. These provisions allow a judge who was holding office as the Chief Justice of the High Court in a State specified in Part B of the First Schedule and has become the Chief Justice of the High Court in a State specified in the said Schedule after the commencement of this act, to receive additional salary or allowance if they were receiving it immediately before such commencement.