Minecraft: Secondary Hand
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Press "F" in Hotbar to switch that Item to your Second Hand.
Right Click to Use your Second Hand... For Instance: Raising a Shield, Placing a Torch, Or even Drink a Potion.
In Combat (Especially against Skeleton Archers)
- A Shield equipt in the Second Hand, Normally Hidden from 1st Person View and not used in 3rd. Right Click and Face Opponent to "Use" the Shield.
In Minning
- Allows you to Equipt both a Pickaxe and a Torch at the same time. Right Click to Place a Torch, Left Click for Normal Minning.