text: data only. It is now technically possible for every country operating a seismological station - and most countries in the world actually do - to participate in GSETT-2. I do hope this will encourage additional participation in areas where we have only few participants today, in particular in South America, Africa and some parts of Asia. The Ad hoc Group has for many years enjoyed close co-operation with the World Meteorological Organization (WM0) for global data exchange through the WM0 GTS, which is their Global Telecommunication System. The Group and the WMO representatives agreed that further preparatory work was needed to utilize this communication system during GSETT-2 as well. The Group welcomed a suggestion by WMO that it should be represented in Geneva between 21 and 28 May 1990 at the forthcoming meeting of the World Meteorological Organization's Commission for Basic Systems Working Group on CD/PV.549 12 (Mr, Dahlman. Sweden ) the Global Telecommunication System to further discuss this issue. The Ad hoc Group suggests that, on the understanding that there are no financial implications for the Conference on Disarmament, Mr. Peter Basham, Canada, assisted by Mr. Shigeji Suyehiro of Japan, should be requested to represent the Group at this meeting. The experimental international data centres which we usually refer to as EIDCs, are operated in Canberra (Australia), Stockholm (Sweden), Moscow (USSR) and Washington in the United States. These centres are key elements of the system being tested during GSETT-2. Much effort and money have been devoted at these four centres to establishing adequate communication facilities and developing and introducing the hardware and software necessary to fulfil their demanding tasks. The introduction of the routine exchange and analysis of wave-form data, which are expected to substantially improve the quality of the 
analysis: This text appears to be discussing a scientific project related to seismology, involving international cooperation and data exchange. The mention of "Ad hoc Group", "World Meteorological Organization", and "Global Telecommunication System" suggests a focus on scientific collaboration and communication infrastructure. The text also mentions the testing of an experimental international data center system, which implies a focus on scientific research and data analysis.