[zorp] NAT issue

I am looking for a integrated nat rule example including source ip address, destination ip address and nat ip address, just like iptables nat rule. iptables -t nat -A POSTROURINT -s 192.168.88.1 -d 192.168.99.1 -j SNAT --to-source 192.168.100.1 any example will be appreciate. //ZhouLi