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A table file can be created on disk using the routine TBTINI
(TCTINI). This routine defines the size of the file as well as
the physical organisation of the table . The size of the file is defined by the number of rows
and the number of words per row. Tables are physically stored on disk
in two formats: by records, corresponding to the natural way of
storing the rows sequentially, and transposed, where all the values of
a single variable - a column - are stored together. The routine
returns the file identifier .