</font>' followed by
an expression followed by `<font color="#82140F"><code>}</code></font>'.  Within the expression, spaces must
separate operands.  This makes `<font color="#82140F"><code>.offset.</code></font>' equal to the height of
y-axis plus 3 cm, so plots are separated by 3 cm.  To learn more about
`<font color="82140F"><code>{rpn ... }</code></font>' (see <a href="ReversePolishMath.html#rpnMathematics">rpn Mathematics</a>).
<p>
Another possibly unfamiliar thing is the code `<font color="#82140F"><c