Delegation of powers to Regional Directors enables exercise of specified Companies Act functions, subject to central revocation. The Central Government delegates to Regional Directors at specified centres the exercise of enumerated Companies Act functions-including alteration of memorandum on conversion, certain formation and alteration provisions, share and director-related powers-subject to central revocation or central exercise of those powers if necessary in the public interest; the delegation commences on publication in the Official Gazette and supersedes prior notification only for the listed items without affecting prior actions.