The output table edit menu can be used to create or edit (randomized) output tables for container recipes or mob/drop blocks. If you are editing an output table that has 50% chance to output a single diamond, it should look like this:

To explain how output tables work exactly, imagine that you are creating a mob drop for zombies. In the example above, each time a zombie dies, there is 50% chance that it will drop a diamond.

When the output table contains more than 1 entry, only 1 of the entries can be dropped per zombie. For instance, consider the case when you add an entry of 40% chance to drop a gold ingot. (So there is 50% chance to drop a diamond and 40% chance to drop a gold ingot.) When a zombie dies, it may drop a diamond or a gold ingot, but never both. Also, there is 10% chance that the zombie won't drop any of them.

• Note for mob drops and block drops: Even though 1 drop can only have 1 output table and thus 1 output item per dead zombie (or whatever other mob), you can add more than 1 block drop or mob drop per monster type or block type. And if you have more than 1 output table for zombies, zombies can drop an item from both output tables at the same time. Output tables from different drops are independent of each other: if you have 2 output tables that both have 50% chance to drop a diamond, there is 25% chance that 2 diamonds will be dropped at the same time and there is 25% chance that no diamond will be dropped at all.
• Note for container outputs: Every container recipe can have only 1 output table per output slot, so every recipe can put only 1 item in each output slot each time the recipe is done. More output tables per slot is not allowed because minecraft inventory slots can contain only 1 item at the same time.
• Note for container outputs: If a container recipe has an output table that has to choose from at least 2 distinct items (like a diamond and a gold ingot), the recipe will be blocked after it produces either of these items. For instance, if the recipe puts a diamond in its output slot, the recipe can't be done again until the player picks up the diamond from that output slot. (Otherwise, the recipe may produce a gold ingot, which is not possible because that output slot is already occupied by that diamond.)

• The 'Cancel' button will take you back to the previous menu, without keeping any changes made in this menu.
• Clicking the 'Apply' button will keep the changes you made in this menu, and take you back to the previous menu.
• The 'Add entry' button will take you to the output table entry menu, where you can add a new entry to this output table.
• There is a 'Delete' button on the right of every entry in this output table. Clicking it will remove the corresponding entry from this output table.