using the amending formula. In some cases, only part of the document is affected by this. Not all relevant documents have been tested in court to see whether they have truly become Constitutionally entrenched, while others have been deemed by the Supreme Court to be part of Canada's constitution. Two notable examples are the power to make changes to the office of the Governor General of Canada and the Supreme Court of Canada. Although the documents creating those two institutions are not mentioned in §52(2) as constitutional documents, they may be partially entrenched by being included in the amending formula. Acts governing these bodies are: Supreme Court Act (RSC 1985, c S-26) for parts about the structure of the court; and Letters Patent, 1947 (8 September 1947, reprinted in RSC 1985, App II, No 31) for parts about the structure of the office of the Governor General. Another subject specifically mentioned in the amending formula is the role of the Canadian monarchy. There are two key pre-Confederation documents of the English parliament that continue to govern the powers and the line of succession of the Canadian monarch: the Bill of Rights 1689 and the Act of Settlement 1701. In both cases, provisions with regard to the monarchy are to be taken literally. Additionally, the rules for the line of succession were amended by the Parliament of Canada in 2013 to align with amendments made in the United Kingdom. It has been argued that additional British documents about the monarchy are entrenched by the preamble of the Constitution Act, 1867, which says in part that Canada will have a "Constitution similar in Principle to that of the United Kingdom". The preamble may therefore entrench key British documents like the Act of Settlement, 1701, the English Bill of Rights, 1689, and the Magna Carta. However, the Supreme Court has ruled that Canadians cannot claim specific rights mentioned in those documents, and that their provisions with regard to civil rights or the constitutional order are to be taken foundationally. Documents affected by reference in the amending formula include: English Bill of Rights, 1689 (1 William & Mary, Sess 2, c 2) for any parts relating to the monarchy; Act of Settlement, 1701 (12 and 13 Will III, c 2) for any parts relating to the monarchy; Succession to the Throne Act, 1937 (1 Geo. VI, c 16); and Succession to the Throne Act,