FFS is Feedback Fuel System, meaning, basically, a fuel injected vehicle with feed and return fuel lines, pressure regulator, etc.
CLKUP is Computer-Controlled Continuously Variable Lockup, meaning that it has a computer actuated automatic transmission.
Are you impressed yet?
PRE-CAT, I have no idea. I'm thinking whatever you're looking at is some weird international engine listing from Honda. What is it you're trying to figure out?