ws.</code></font>' numbers (as opposed to `<font color="#82140F"><code>.cols.</code></font>'
numbers, as in the format where the `<font color="#82140F"><code>bycolumns</code></font>' keyword is not
present).  (Extra information in the file can be skipped; see
discussion of the `<font color="#82140F"><code>*</code></font>' keyword below).  The first line of the data
file contains the first column of the gridded data, corresponding to x
equal to `<font color="#82140F"><code>x[1]</code></font>').  The file sho