# Inclusion Enum

> Specifies how to include a resource in a file.

- Product: Adobe PDF Library 21
- Language: .NET Framework
- Version: APDFL21.0.0PlusP1e
- HTML page: https://docs.datalogics.com/apdfl21/DotNetFramework/APDFL21.0.0PlusP1e/enum/Inclusion
- Version index: https://docs.datalogics.com/apdfl21/DotNetFramework/APDFL21.0.0PlusP1e/llms.txt

**Namespace:** `Datalogics::PDFL`

## Description

Specifies how to include a resource in a file.

## Values

- `OncePerDocument = 0`: Include the resource only once per file.
- `OnEveryPage = 1`: Include the resource on every page in the file.
- `Never = 2`: Never include the resource.
- `WhenNeeded = 3`: When needed.
- `ByRange = 4`: Include the resource for a specified range of pages.