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5 Command file: Reading the data 49NewNewNewa three letter month name (Jan Feb Mar Apr May Jun Jul Aug Sep OctNov Dec), yy is the year within the century (00 to 99), cc is the century (19or 20). The separators ’/’ and ’-’ must be present as indicated. The datesare converted to days starting 1 Jan 1900. When the century is not specified,yy of 0-32 is taken as 2000-2032, 33-99 taken as 1933-1999.– !DMY specifies the field has one of the date formats dd/mm/yy or dd/mm/ccyyand is to be converted into a Julian day.– !MDY specifies the field has one of the date formats mm/dd/yy or mm/dd/ccyyand is to be converted into a Julian day.– !TIME specifies the field has the time format hh:mm:ss. and is to be convertedto seconds past midnight where hh is hours (0 to 23), mm is minutes(0-59) and ss is seconds (0 to 59). The separator ’:’ must be present.– for a group of m variates!G m is used when m contiguous data fields are to betreated as a factor or group of variates. For examplelonghandshorthand.X1 X2 X3 X4 X5 ydata.daty ∼ mu X1 X2 X3 X4 X5.X !G 5 ydata.daty ∼ mu Xso that the 5 variates can be referred to in the model as X byusing X !G 5• transformations– see belowStorage of alphabetic factor labelsNewNewSpace is allocated dynamically for the storage of alphabetic factor labels with adefault allocation being 2000 labels of 16 characters long. If there are large !Afactors (so that the total across all factors will exceed 2000), you must specifythe anticipated size (within say 5%). If some labels are longer then 16 charactersand the extra characters are significant, you must lengthen the space for eachlabel by specifying !LL c e.g.cross !A 2300 !LL 48indicates the factor cross has about 2300 levels and needs 48 characters to holdthe level names although only the first 20 characters of the names are ever printed.!PRUNE on a field definition line means that if fewer levels are actually present