Alteration of articles by special resolution enables company conversion, subject to Central Government approval and Registrar filing. A company may alter its articles by special resolution, including conversions between private and public status, subject to its memorandum and the Act. Removal of private-company restrictions causes cessation of private status. Conversion of a public company into a private company requires an order of the Central Government. Every alteration and the approving Central Government order must be filed with the Registrar with a printed copy of the altered articles within fifteen days for registration. Registered alterations are valid as if originally in the articles, subject to the Act.