Some governments do. For instance, check Brazil's constitution: http://www.planalto.gov.br/ccivil_03/constituicao/constituicao.htm http://www.planalto.gov.br/cc

Some governments do. For instance, check Brazil's constitution: http://www.planalto.gov.br/ccivil_03/constituicao/constituicao.htm http://www.planalto.gov.br/ccivil_03/constituicao/constituic... which has for changed articles both the original text (in strike through), the updated text, and hyperlinks to the legislation which was the source of each change. (And it's not just the constitution, all federal legislation has pages presenting in that format.)