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12w17a is the third snapshot released for Java Edition 1.3.1.

Additions[]

Blocks[]

Slabs
  • Wooden slabs for each of the four types of wood added.
    • New block IDs 125 for double wooden slabs and 126 for single wooden slabs.
    • These new slabs no longer act like stone.
    • An axe should be used to break them.
    • They are no longer immune to fire and lava.
    • Wooden slabs created in older versions of Minecraft are still stone-like and fireproof and will not change to the new slabs when placed or mined.

Items[]

Book and quills
  • Editable Books – Book and quill, crafted using a book, feather, and ink sac.
    • When a book and quill is made, it can be right-clicked to open a screen that allows you to type the book.
    • Pressing "Done" will save whatever was typed and allow you to edit the book again later, yet will not "sign" it.
    • When "signing" a book, it will allow you to choose a title up to 16 characters long and disable editing of the book, the book and quill will then become a written book, with the icon changing along with the label.
Written book
  • Looks the same as a regular book, but has a shine like an enchantment.
  • After being finished, the written book cannot be edited again.

Commands[]

General
  • /help and alias /? added.

General[]

Options
  • Added 'Chat Options'.
    • Added chat opacity, letting the chat be semi-transparent.
    • Added chat disabling, removing the chat for Multiplayer servers.
    • Added chat colors option.
    • Added "Only Commands" mode to chat.

Changes[]

Blocks[]

Ice
Saplings
  • Saplings now have their proper names (e.g. Spruce Sapling).

Items[]

Books
  • Leather is now required to craft books.
Tools

Mobs[]

Animals
  • Livestock, such as chickens, can now be "walked through" instead of pushing the player around in crowded pens.

Non-mob entities[]

Boats
  • Can now be destroyed in one hit in Creative mode.
Minecarts
  • Can now be destroyed a single hit in Creative mode.

Gameplay[]

Bonus chest
  • The player can no longer have a bonus chest in Hardcore mode.
Creative mode
  • Flying through water in Creative mode is no longer slow.
Enchantments

Command format[]

General
  • Server Commands now appear in italics in multiplayer.

Fixes[]

3 bugs fixed
  • Fixed entity collision errors.
  • Fixed the pick block function.
  • Fixed chat issues.

References[]

  1. "Minecraft Snapshot 12w17a" (archived) by Jens Bergensten – Mojang.com, April 26, 2012.
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