



This chapter contains general information concerning the steps needed to obtain access to, and use, an



system. It attempts (as does the design and coding of 


itself) to avoid specific references to
particular computer devices and to the peculiarities of any one 


installation. We will assume,
for the most part, that you will be running 


on a Unix workstation although 


should
still work in more classical environments. Even for workstations of the “same” operating system,
some installation-specific practicalities remain. For the NRAO installations, these are described in
Appendix Z.



computer



TV window called XAS