<configs>
<insertAfter xpath="/rwgmixer/prefab_rules/prefab_rule[@name='townGroup']/prefab[@rule='detailFillerGroup']" >
<prefab rule="traderGroup"/>
</insertAfter>
</configs>
<prefab_rule name="townGroup">
<prefab rule="residentialOldGroup"/>
<prefab rule="residentialNewGroup"/>
<prefab rule="commercialGroup"/>
<prefab rule="downtownGroup"/>
<prefab rule="industrialGroup"/>
<prefab rule="ruralGroup"/>
<prefab rule="detailFillerGroup" prop="0.05"/>
</prefab_rule>
<append xpath="/rwgmixer/prefab_rules/prefab_rule[@name='commercialGroup']">
<prefab rule="traderGroup" min_count="0" max_count="1" prob="0.015"/>
</append>