<?xml version="1.0" encoding="UTF-8"?>
<pages>
    <page name="A" class="PageFirst" file="./pages/PageFirst.php" start="true">
        <rules>
            <rule input="sure" next="B" />
            <rule next="C" />
        </rules>
    </page>
    <page name="B" class="PageSecond">
        <rules>
            <rule next="D" /> <!-- any state, jump to D -->
        </rules>
    </page>
    <page name="C" class="PageSecondBis" /> <!-- implicit next page -->
    <page name="D" class="PageThird" final="true" />
</pages>