A Pattern is an item that is used in autocrafting. It stores the recipe that should be autocrafted.

Hold SHIFT to see the output of the Pattern displayed on the item texture.

Oredict mode

The Pattern can be configured to be a oredict pattern.

Blocking mode

When configured as a blocking mode pattern, this pattern will only allow to run autocrafting one-at-a-time.

Clearing a Pattern

Use SHIFT + right click in your inventory while holding the Pattern to clear it.