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Scope of this manual

This manual describes the facilities available from the DAS and the commands used to invoke them. The remainder of this chapter is a tour of the hardware and software facilities. Observers new to the WHT may find it useful to read this information. Chapter 2 describes, in `cook-book' style, how to use the system. Chapter 3 is a reference guide to the full command set.

The current issue of this manual describes the DAS commands as offered by the observing-system version S0-9. Earlier versions of the system have significant differences in the command set.

This manual has been prepared using . The source-code for the current issue is available on-line on the ING VAXcluster and from RGO (Cambridge); look in the directory tree [MANUALS] or ask your support astronomer.