farcast hax - a program like aa/scroll that allows you to target and hit people far away with CS, basically like throwing your cs from most distances.
legit farcast - a bug where if you target someone with throw jav (while they are out of range for cs) and switch it to cs while they are still out of range, cs will hit them. it is server side only so it appears as if you are still throwing javs while the other person sees CS. how can you tell if you did it right then? they die fast since its cs dmg and they will usually cry hax cuz even though how to do it was released to the public on major pvp east forum, ppl still dont know.
simple, and this makes jav zons much more powerful in pvp, of course if you do it legitly (well exploiting a serverside bug ).
to tell the difference, the zon has to be on ur screen before farcasting you, if they arent then they are using the hax.