1.4 (1.8 - 1.18.2) /check - main command having <arguments>
The importance of arguments:
/check add [IdName] [Name] - the command called with the add argument creates a checker /check delete [IdName] - the command called with the delete argument removes the checker /check list - the command called with the list argument shows the created checkers /check player [player_name] - the command called with the argument [player_name] teleports the person who called the command and the player selected in the command ([player_name]) to a free checker.
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groundbreaking updates: - Added prohibition on destroying blocks, placing blocks and using commands during checking