code></font>' and `<font color="#82140F"><code>.cols.</code></font>' columns.
(If `<font color="#82140F"><code>.rows.</code></font>' and `<font color="#82140F"><code>.cols.</code></font>' are not supplied, but the grid
already exists, then those pre-existing values are used.  If they are
specified here, then they are checked for consistency with the
pre-existing values if they exist.) Gri will read `<font color="#82140F"><code>.rows.</code></font>' lines,
each containing `<font color="#82140F"><code>.cols.<