RESCAL for MATLAB requires the installation of MATLAB to work. If matlab is installed already then a copy of the set of programs RESCAL for MATLAB need to be ftp'ed from the main Oxford Neutron Group server onto a working directory named "RESCAL". As this program has just been developed a request for RESCAL for MATLAB should be made directly to the e-mail address below. Once installed the program is easy to run. Start up "matlab" in the new RESCAL directory then at the matlab prompt simply type "rescal". Two parameter windows will appear into which all the spectrometer parameters can be entered. Printing is supported for postscript laser printers but the rc_prt.m file needs to be configured for the specific printer queue of your computer. To do this you must edit the rc_prt.m file which creates a postscript file of temp.ps by modifying the line !print/queue=clps4_av6 temp.ps to be !print_your_queue temp.ps