Powertool is for people that need to use certain commands repeatedly by linking them to items.
Instructions:
1. Hold an item
2. type /pt [command]
Note that your command should not contain the starting slash.
Some examples:
/pt backpack
/pt town claim
/pt money pay Regory 1000000
Now every time you left click with the object you held in step 1, you will use the command you entered in step 2.
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To erase any commands linked to an item, simply hold the item and type /pt.
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You can also use powertool to send messages to chat by typing /pt c:[message]
For example:
/pt c:I love you Ken!
However, I suspect this would annoy Ken, and possibly get you banned if spammed.