Postage stamps and postal history of Guernsey In 2010 "EUR" (Europe) and "ROW" (Rest of World) were issued. In 2012 this was expanded further with "UK Letter", "GY letter" (Guernsey) "INT letter" (International) "UK large" and "GY large" designating envelope size and destination. Starting in 2015, Guernsey also issues Post & Go stamps. 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
SIMMON and delay I/O events, these would appear to the guest program as happening unnaturally quickly. Programs under test -- so-called "guest programs" -- had to be capable of stand-alone operation on the bare hardware. SIMMON provided services for the test tools, but not for the guest. These were some of the programs that had been tested using SIMMON: SIMMON SIMMON (SIMulation MONitor) was a proprietary software testing system developed in the late 1960s in the IBM Product Test Laboratory, then at Poughkeepsie, N.Y. It was designed for the then-new line of System/360 computers as a vehicle for testing the software