There are several levels to run the WFC software. Below is a schematic drawing to show the hierarchy of the scripts (w_xxx) and invoked programs. Each of the mentioned items will be described seperately. w_run --> w_stageI --> w_dearchive - - - --> w_vaxlink - - - --> w_proc --> w_fits ---> wfotfits - - - --> w_clean --> wattproc - - --> wmakgti - - --> wmrggti - - --> wgtiflt - - --> wgain - - --> wattana (?) - - - --> w_plot ---> wqplot - - - --> w_shift (?) - - - --> w_spv ----> run_spv --> evaccum - --> format - --> w_stageII --> cdi --> iros --> wopi --> wspiros --> correlate --> lcv The lowest (rightmost) level consists of the pool of machine programs. To run these requires quite some expertise in order to use all the possible parameters correctly. As most of these programs act on one observation only, scripts of the are available to enable the pre-processing (stage-I) of a complete Observation Period. To give a reasonable flexibility for moderately knowledgeable users two scripts 'w_vaxlink' and 'w_proc' are distributed to enable a relatively simple calling of the programs of stage-I as a number of default tuning variables are built in. On the next higher level two scripts 'w_stageI' and 'w_stageII' are available. They are intended to be used by 'w_run' but can be inviked seperately from user specific scripts. The currently highest level is presented by script 'w_run' which can be used only a standerd way of processing and analysing. It may well serve as a template for scripts built be the indivual user. N.B. Script 'w_dearchive' is only relevant for the archiving system of SRON-Utrecht. Presently for external proecessing locations it is assumed that the FOT data is on-line available.