From my experience when I was a GP on iClassic - I don't discuss the system how we know from 3,000 players who might be using but - we warp to the player and if we see someone that looks like macroing at the farm, we dragged them away from the farm - if the player still did the same movement, then they are macroing

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The cave will colapse sometimes, I think that's the iEra's system to prevent Macro users?