From Minecraft Wiki
|This article makes use of diagrams in the MCRedstoneSim format for compactness and clarity.
Some of the designs are more than two blocks high which is represented here by the layers being frames in an animated gif or labeled side by side. A full legend is on the Redstone schematics page.
MCRedstoneSim (from this point MCRS), uses a basic symbolism to represent redstone circuits. This same symbolism is used on the circuits page.
The symbols used in MCRS are shown below:
|Air over air. (Blank space)|
|Air over block.|
|Block over block.|
|Air over wire.|
|Air over torch.|
|Air over torch (attached to adjacent block.)|
|Wire over block.|
|Torch over block.|
|Torch (attached to adjacent block) over block.|
|Block over wire.|
|Block over torch.|
|Block over torch (attached to adjacent block.)*|
|Torch (attached to adjacent block) over wire.|
|Wire over wire.|
|Air over lever.|
|Air over lever (attached to adjacent block.)|
|Air over button.|
|Shadow (used for visual effect.)||n/a|
|*Glass blocks do not interact with redstone. They are used in screenshots purely for visibility and must be replaced with opaque blocks in actual circuits.|