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<PRE>
<font color="#82140F">
`read grid x [.rows.]'
`read grid y [.rows.]'
`read grid data [spacers] \
  [.rows. .cols.] [spacers] [bycolumns]'
</font></PRE>
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<p>
For `<font color="#82140F"><code>netCDF</code></font>' files, the commands are as follows (note that it is
not possible to specify the number of data to read, nor to read the grid
by columns).
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