The SAOtng program is started from the saotng script by typing: saotng [command options ...] [filename] where [filename] and [command options] are optional. It is required that the SAOtng program be started using the script rather than directly in order that to set the environment correctly. ... IRAF image files (.imh .stf) . ... These command line options can be set automatically each time SAOtng is started by means of csh-style environment variables. ... The SAOtng command line options are: . ...