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INITDATA()
   Sets up the buffer area as a matrix of rows and columns.

   Syntax
         nRows = INITDATA(nColumns)

   Arguments
         nColumns    Sets the number of columns.

   Returns
         nRows       Returns the number of rows that were initialized
                     according to the buffer size and the number of
                     columns defined.

         RET_COLS()  Returns the number of columns set with INITDATA().

         RET_ROWS()  Returns the number of buffer rows.

   Description
         INITDATA() sets up the buffer area as a matrix of rows and columns.
         The buffer configuration can be changed at any time during the
         operation of the program. Each time you begin to set up a new graph
         you can configure the buffer to a different number of columns. This
         function formats the buffer area so it will collect and store your
         data properly. It also resets values used by FLIPPER such as
         maximum, minimum and other values needed to produce your graph.