of a Law Commission, Chairman or member of the Council of Islamic Ideology, Special Assistant to the Prime Minister, Adviser to the Prime Minister, Special Assistant to a Chief Minister, Adviser to a Chief Minister or member of a House or a Provincial Assembly;
"Speaker" means the Speaker of the National Assembly or a Provincial Assembly, and includes any person acting as the Speaker of the Assembly;
"taxation" includes the imposition of any tax or duty, whether general, local or special, and "tax" shall be construed accordingly ;
"tax on income" includes a tax in the nature of an excess profits tax or a business profits tax.
(2) In the Constitution "Act of