# Duplex Enum

> Duplex values.

- Product: Adobe PDF Library 21
- Language: Java
- Version: APDFL21.0.0PlusP1f
- HTML page: https://docs.datalogics.com/apdfl21/Java/APDFL21.0.0PlusP1f/enum/Duplex
- Version index: https://docs.datalogics.com/apdfl21/Java/APDFL21.0.0PlusP1f/llms.txt

**Namespace:** `com::datalogics::PDFL`

## Description

Duplex values.

## Values

- `FORCE_SIMPLEX`: Force simplex printing
- `OFF`: Use system printer preferences duplex setting
- `TUMBLE_LONG`: Tumble over long edge
- `TUMBLE_SHORT`: Tumble over short edge