định dạng player.dat
Minecraft Inventory Slot Numbers For PcMinecraft Inventory Slot NumbersMinecraft Inventory Slot Numbers< CommandsThe Inventory is the pop-up menu that a player uses to manage items.
Inventory Slot Numbers Minecraft - gmslot.mystrikingly.com
It's built-in Minecraft feature, click f3+h and then you see item ID when you move your cursor on item in inventory btw: You posted it in wrong category of forum, it's not related to helping with coding, I'd post it in off topic or comunity help.
Inventory Slots | MC Utils
Complete guide to Minecraft Bukkit inventory slot IDs. Navigate chests, double chests, furnaces, player inventories, villager trades, brewing stands, crafting tables, and more. Essential resource for Minecraft plugin developers and server admins.