Postage stamps and postal history of Guernsey Postage stamps and postal history of Guernsey The first postal service took place using mail sent with captains of packet ships, using agents in the England and in the islands for the end delivery. The cost was normally 3d. The first pillar boxes in Britain were introduced in the Channel Islands as an experiment in 1852, to collect mail for the Royal Mail packet boats. The oldest pillar box in use in the British Isles is in Guernsey. The first postage stamps printed for use in Guernsey were issued during the occupation of the island during World War II. In
SIMMON virtual machine for testing of a single guest program running there. CP-40 supported many virtual machines for time-sharing production work. CP-40 evolved by many stages into the present VM/CMS operating system. SIMMON was a useful test vehicle for many years. SIMMON was designed to dynamically include independently developed programs (test tools) for testing the target guest program. The SIMMON kernel maintained control over the hardware (and the guest) and coordinated invocation of the test tools. Two modes of operation were provided: In this mode, each instruction in the guest program was simulated without ever passing control directly to the guest.