ementing policy logic efficiently.</p>
</dd>
<dt class="hdlist1">Domain specific language</dt>
<dd>
<p>The expression syntax is oriented at easy machine generation and the use of domain specific languages for generating it.  While it is possible to write predicate expressions directly, support in higher level languages such as Lua can facilitate expression of rule logic.</p>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The major disadvantage over the traditional rule system are:</p>
</div>
<div class="dlis