things i have learned from Mechwarrior 5 after several hours playing it.
1. i am a terrible piolet of a giant robot.
2. while fun walking through tanks really messes up your mech.
3. read the mission difficulty thingy so you don't end up with a Surprise Assault mech in your lap.
Farming helper - do not add! was an unobtainable item added alongside the Big Cats & WWF event. Presumably, it was used by Jagex moderators to test the Farming mechanics of the event. It had a right click option of "Cheat".
oldschool.runescape.wiki
Despite the very clear instructions in the item's name, it was ultimately added to the game