Music of the Channel Islands for hundreds of years. Song in Jèrriais celebrates the language and its survival. Songs derived from French mark geographic identity and proximity to France, while songs derived from the UK and Ireland re-present Jersey's wider heritage. The development of tourism in the 19th century brought a demand for dance music in tea-rooms and hotels. Some local composers supplied songs and sheet music aimed at a tourist market. Claude Debussy composed part of "La Mer" in Jersey. John Ireland settled for a time in Guernsey. The Channel Islands Music Council was founded in 1974 to promote music in the islands. 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.