4. The words “instrument requiring to be stamped” include all matters, proceedings, memoranda, deeds, instruments, documents and papers, subject to the control of the Legislature and which, under this Act, or any order-in-council, require to have any stamp attached thereto or impressed thereon, and also all letters patent, commissions, licenses, permits, certificates and instruments, whether originals, exemplifications or copies, which, under this Act or any other Act of the Legislature, or under any order-in-council founded on or recognized by any such act, require to have any stamp attached thereto or impressed thereon.