NoPlaceDelay

Removes the normal delay between placing blocks. This remove place delay ticks. Out of vanila, you should probably use FastPlace.

OnlyOnTheseBlockFaces: down, up, north, south, west, east

Only removes delay when placing on these sides.

• up/down → Y axis (vertical): jumping and falling
• north/south → Z axis (forward/backward)
• west/east → X axis (left/right)

These are Minecraft’s 3D coordinates:

• X = left/right
• Y = up/down
• Z = forward/backward