s) ord) )
</pre>

<p>While <code>(nr +Ord @Nr)</code> and <code>(dat +Ord @Dat)</code> are direct
index traversals, <code>(nm +CuSu @Cus (cus +Ord))</code> iterates the
<code>nm</code> (name) index of customers/suppliers <code>+CuSu</code>, and then
follows the <code><a href="refR.html#+Ref">+Ref</a></code> <code><a
href="refL.html#+Link">+Link</a></code> of the <code>cus</code> relation to the
orders. The same applies to the search for city names via <code>ort</code>.

<p>The most complex example is <code>