| Interface | Description | 
|---|---|
| Bamboo | 
 'leaves' represents the size of the leaves on this bamboo block. 
 | 
| Bed | 
 Similar to  
Bisected, 'part' denotes which half of the bed this block
 corresponds to. | 
| Bell | 
 'attachment' denotes how the bell is attached to its block. 
 | 
| BrewingStand | 
 Interface to the 'has_bottle_0', 'has_bottle_1', 'has_bottle_2' flags on a
 brewing stand which indicate which bottles are rendered on the outside. 
 | 
| BubbleColumn | 
 'drag' indicates whether a force will be applied on entities moving through
 this block. 
 | 
| Cake | 
 'bites' represents the amount of bites which have been taken from this slice
 of cake. 
 | 
| Campfire | 
 'signal_fire' denotes whether the fire is extra smokey due to having a hay
 bale placed beneath it. 
 | 
| Chest | 
 'type' represents which part of a double chest this block is, or if it is a
 single chest. 
 | 
| Cocoa | |
| CommandBlock | 
 'conditional' denotes whether this command block is conditional or not, i.e. 
 | 
| Comparator | 
 'mode' indicates what mode this comparator will operate in. 
 | 
| CoralWallFan | |
| DaylightDetector | 
 'inverted' denotes whether this daylight detector is in the inverted mode,
 i.e. 
 | 
| Dispenser | 
 Similar to  
Powerable, 'triggered' indicates whether or not the
 dispenser is currently activated. | 
| Door | 
 'hinge' indicates which hinge this door is attached to and will rotate around
 when opened. 
 | 
| EnderChest | |
| EndPortalFrame | 
 'eye' denotes whether this end portal frame has been activated by having an
 eye of ender placed in it. 
 | 
| Farmland | 
 The 'moisture' level of farmland indicates how close it is to a water source
 (if any). 
 | 
| Fence | |
| Fire | 
 md_5's mixtape. 
 | 
| Furnace | |
| Gate | 
 'in_wall" indicates if the fence gate is attached to a wall, and if true the
 texture is lowered by a small amount to blend in better. 
 | 
| GlassPane | |
| Hopper | 
 Similar to  
Powerable, 'enabled' indicates whether or not the hopper
 is currently activated. | 
| Jukebox | 
 'has_record' is a quick flag to check whether this jukebox has a record
 inside it. 
 | 
| Ladder | |
| Lantern | 
 'hanging' denotes whether the lantern is hanging from a block. 
 | 
| Leaves | 
 'persistent' indicates whether or not leaves will be checked by the server to
 see if they are subject to decay or not. 
 | 
| Lectern | 
 'has_book' is a quick flag to check whether this lectern has a book inside
 it. 
 | 
| NoteBlock | 
 'instrument' is the type of sound made when this note block is activated. 
 | 
| Observer | |
| Piston | 
 'extended' denotes whether the piston head is currently extended or not. 
 | 
| PistonHead | 
 'short' denotes this piston head is shorter than the usual amount because it
 is currently retracting. 
 | 
| RedstoneRail | 
 A type of minecart rail which interacts with redstone in one way or another. 
 | 
| RedstoneWallTorch | |
| RedstoneWire | 
 'north', 'east', 'south', 'west' represent the types of connections this
 redstone wire has to adjacent blocks. 
 | 
| Repeater | 
 'delay' is the propagation delay of a repeater, i.e. 
 | 
| Sapling | 
 'stage' represents the growth stage of a sapling. 
 | 
| Scaffolding | 
 'bottom' indicates whether the scaffolding is floating or not. 
 | 
| SeaPickle | 
 'pickles' indicates the number of pickles in this block. 
 | 
| Sign | |
| Slab | 
 'type' represents what state the slab is in - either top, bottom, or a double
 slab occupying the full block. 
 | 
| Snow | 
 'layers' represents the amount of layers of snow which are present in this
 block. 
 | 
| Stairs | 
 'shape' represents the texture and bounding box shape of these stairs. 
 | 
| StructureBlock | 
 'mode' represents the different modes in which this structure block may
 operate. 
 | 
| Switch | 
 'face' represents the face to which a lever or button is stuck. 
 | 
| TechnicalPiston | 
 'type' represents the type of piston which this (technical) block corresponds
 to. 
 | 
| TNT | 
 'unstable' indicates whether this TNT will explode on punching. 
 | 
| TrapDoor | |
| Tripwire | 
 'disarmed' denotes that the tripwire was broken with shears and will not
 subsequently produce a current when destroyed. 
 | 
| TripwireHook | |
| TurtleEgg | 
 'hatch' is the number of turtles which may hatch from these eggs. 
 | 
| WallSign | 
| Enum | Description | 
|---|---|
| Bamboo.Leaves | 
 Bamboo leaf size. 
 | 
| Bed.Part | 
 Horizontal half of a bed. 
 | 
| Bell.Attachment | 
 What the bell is attached to. 
 | 
| Chest.Type | 
 Type of this chest block. 
 | 
| Comparator.Mode | 
 The mode in which a comparator will operate in. 
 | 
| Door.Hinge | 
 The hinge of a door. 
 | 
| RedstoneWire.Connection | 
 The way in which a redstone wire can connect to an adjacent block face. 
 | 
| Slab.Type | 
 The type of the slab. 
 | 
| Stairs.Shape | 
 The shape of a stair block - used for constructing corners. 
 | 
| StructureBlock.Mode | 
 Operating mode of a structure block. 
 | 
| Switch.Face | 
 The face to which a switch type block is stuck. 
 | 
| TechnicalPiston.Type | 
 Different piston variants. 
 | 
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