Minecraft wiki entry for Sign, associated text: 1 Obtaining
1.1 Natural generation
1.2 Breaking
1.3 Chest loot
1.4 Crafting
2 Usage
2.1 Placement
2.2 Text
2.3 Interaction
2.4 Fuel
2.5 Note Blocks
3 Sounds
3.1 Generic
3.2 Unique
4 Data values
4.1 ID
4.2 Block states
4.3 Block data
5 Achievements
6 Advancements
7 History
8 Gallery
9 Issues
10 References