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        [GREG1\]COLUMN /LINES L1 [L2]

    limits the range of lines read in the input file or table. L1 and L2 re-
    fer to absolute line numbers. Since comment lines are ignored, number of
    read lines is at most L2-L1+1, and can be 0 if all lines were comments.

    This  option  is  useful to avoid non-data lines, or to read by pieces a
    formatted file which is too long for the column buffers. L1 and  L2  are
    reinitialized  for  each  new input file or table. L2 defaults to end of
    file if not specified.

Gildas manager 2020-07-04