Greg,
there is no such document.
But the path of traffic inside ACE is
Fastpath -->ICM --> LB --> OCM --> FP
| /\
+-------------------------+
Fastpath does normalization
ICM does inboud ACL - policy matching
LB does loadbalancing
OCM does Nating and outbound ACL
So, you can see the order of operation.
The ME (microengines) have stats that you can check with "sho np [1|2] me-stats '-s'"
Gilles.