> ## 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. # Extend Open Lattice Beams *** ## About this Block **What it does:** Extends open beams within a Lattice by using a Body input to select which beams to extend. **Tips:** * The Region input allows for following selection methods: * **Inside:** Selects open beams inside the Body. * **Outside:** Selects open beams outside the Body. * **Boundary:** Selects open beams on the surface of the Body. * Adjusting the Tolerance input value determines which beams are considered inside, outside, or on the surface. * Open up the block's Properties Panel to view the beam, implicit, and thick graph properties. * These properties are populated based on the type of Unit Cell you use. An error sign with a tooltip appears next to the property if it is empty. ## Example File Download Example: [Extend Open Lattice Beams](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/extend_open_lattice_body_beams.ntop) ![Extend Open Lattice Beams](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/extend.png) ***

Lattice, Scalar Field, Implicit Body, Selection Region, Scalar

Extends open beams within a Lattice. ### Inputs | Name | Type | Description | | - | - | - | | Lattice | [Lattice](../../../../block-documentation/types/lattice) | Lattice containing open beams to extend. | | Distance | [Scalar Field](../../../../block-documentation/types/scalar-field) | Distance to extend the open beams. | | Body | [Implicit Body](../../../../block-documentation/types/implicit-body) | Implicit body defining the beam selection region. | | Region | [Selection Region](../../../../block-documentation/types/selection-region) | Option to select beams inside, outside, or touching the surface of the Implicit Body. | | Tolerance | [Scalar](../../../../block-documentation/types/scalar) | Tolerance value to use for determining when beams are inside, outside, or on the boundary of the Implicit Body. | ### Outputs | Type | | - | | [Lattice](../../../../block-documentation/types/lattice) | ***

Lattice, Scalar Field, Implicit Body, Selection Region, Scalar, 1.1.0

Extends open beams within a Lattice. ### Inputs | Name | Type | Description | | - | - | - | | Lattice | [Lattice](../../../../block-documentation/types/lattice) | Lattice containing open beams to extend. | | Distance | [Scalar Field](../../../../block-documentation/types/scalar-field) | Distance to extend the open beams. | | Body | [Implicit Body](../../../../block-documentation/types/implicit-body) | Implicit body defining the beam selection region. | | Region | [Selection Region](../../../../block-documentation/types/selection-region) | Option to select beams inside, outside, or touching the surface of the Implicit Body. | | Tolerance | [Scalar](../../../../block-documentation/types/scalar) | Tolerance value to use for determining when beams are inside, outside, or on the boundary of the Implicit Body. | ### Outputs | Type | | - | | [Lattice](../../../../block-documentation/types/lattice) | ***

Voronoi Volume Lattice, Scalar Field, Implicit Body, Selection Region, Scalar

Extend open beams within a Voronoi Volume Lattice. ### Inputs | Name | Type | Description | | - | - | - | | Voronoi lattice | [Voronoi Volume Lattice](../../../../block-documentation/types/voronoi-volume-lattice) | Voronoi Volume Lattice containing open beams to extend. | | Distance | [Scalar Field](../../../../block-documentation/types/scalar-field) | Distance to extend the open beams. | | Body | [Implicit Body](../../../../block-documentation/types/implicit-body) | Implicit body defining the beam selection region. | | Region | [Selection Region](../../../../block-documentation/types/selection-region) | Option to select beams inside, outside, or touching the surface of the implicit body. | | Tolerance | [Scalar](../../../../block-documentation/types/scalar) | Tolerance value to use for determining when beams are inside, outside, or on the boundary of the implicit body. | ### Outputs | Type | | - | | [Voronoi Volume Lattice](../../../../block-documentation/types/voronoi-volume-lattice) | ***

Voronoi Volume Lattice, Scalar Field, Implicit Body, Selection Region, Scalar, 1.1.0

Extend open beams within a Voronoi Volume Lattice. ### Inputs | Name | Type | Description | | - | - | - | | Voronoi lattice | [Voronoi Volume Lattice](../../../../block-documentation/types/voronoi-volume-lattice) | Voronoi Volume Lattice containing open beams to extend. | | Distance | [Scalar Field](../../../../block-documentation/types/scalar-field) | Distance to extend the open beams. | | Body | [Implicit Body](../../../../block-documentation/types/implicit-body) | Implicit body defining the beam selection region. | | Region | [Selection Region](../../../../block-documentation/types/selection-region) | Option to select beams inside, outside, or touching the surface of the implicit body. | | Tolerance | [Scalar](../../../../block-documentation/types/scalar) | Tolerance value to use for determining when beams are inside, outside, or on the boundary of the implicit body. | ### Outputs | Type | | - | | [Voronoi Volume Lattice](../../../../block-documentation/types/voronoi-volume-lattice) | This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.