Many aspects of ASTERIX's operation can be customised at both the site and user level. This is generally done by supplying extra start up procedures which ASTERIX executes when you type 'aststart' to start a shell or ICL session. These can override the values of built in ASTERIX settings, or define new commands, etc.
A utility called 'astdefs' is provided which displays the important ASTERIX control parameters, eg.
gives the output,csh> astdefs
ASTERIX defaults for user : dja Installation ASTERIX Version : 1.7-1 Installed root directory : /star/asterix Optional Data FTOOLS calibration files : unknown Local and user start up procedures Site shell start up : /star/asterix/../ast_local/startup Site ICL start up : /star/asterix/../ast_local/startup.icl User shell start up : UNDEFINED User ICL start up : UNDEFINED Logging Info Current logging state : OFFA fuller listing is available by adding an 'all' argument to the astdefs command.