# Duplex Enum

> Duplex values.

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

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

## Description

Duplex values.

## Values

- `Off = 0`: Use system printer preferences duplex setting
- `TumbleShort = 1`: Tumble over short edge
- `TumbleLong = 2`: Tumble over long edge
- `ForceSimplex = 3`: Force simplex printing