FILE EXPAND <data_file>,m,n increases the maximum number of variables in <data_file> by m and the length of each record of observations by n bytes. FILE EXPAND <data_file> does the job by using parameters m=m1/4+4 (m1=current max.number) and n=n1/4+20 (n1=current record length). By using negative values of m and n the size of <data_file> can be reduced. If "too negative" values are given, FILE EXPAND corrects them automatically to lowest possible values (See 'min' below). A reduction to minimal size of the file is achieved by the command FILE EXPAND <data_file>,min,min This is a useful alternative when making archive copies of large Survo data files. D = More information on data management