> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Import Unit Cell Rule

## About this Block

**What it does:** Imports a lattice .rule file from an external location. The output of this block is a 1 Parameter Unit Cell.

**Common uses:**

* Used with a Cell Map to create a **Periodic Lattice**.

***

Import Unit Cell Rule file from an external location.

### Inputs

| Name | Type                                               | Description                         |
| ---- | -------------------------------------------------- | ----------------------------------- |
| Path | [Path](../../../../block-documentation/types/path) | System path of Unit Cell Rule file. |

### Outputs

| Type                                                                                 |
| ------------------------------------------------------------------------------------ |
| [1 Parameter Unit Cell](../../../../block-documentation/types/1-parameter-unit-cell) |