rst, third, and fourth
words on the data line.  These words need not be numbers.  This example
illustrates a general mechanism of using the `<font color="#82140F"><code>*</code></font>' character to skip
over unwanted items in the data file.  Note that there is no need to
supply `<font color="#82140F"><code>*</code></font>' characters for trailing extraneous words; Gri will skip
them anywary.  Finally, note that any order of `<font color="#82140F"><code>x</code></font>' and `<font color="#82140F"><code>y</c