This article discusses the governing document of a company, its purpose, types, and amendments under the provisions of the Corporations Act 2001(Cth). It also covers the limitations on the power of majority shareholders and equitable limitations on alterations. The article cites relevant sections of the Corporations Act 2001(Cth) and landmark cases such as Gambotto v WCP Ltd (1995) 182 CLR 432; 127 ALR 417; 16 ACSR 1; 13 ACLC 342, Peters’ American Delicacy Co Ltd v Heath [1939], and Vatcher v Paull [1915] AC 372.