---
name: "optex"
section: "1"
platform: "linux"
package: "texlive-doc"
version: "2026.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/optex"
---

# optex(1)

OPmac and Plain TeX for LuaHBTeX engine.

## NAME

optex - OPmac and Plain TeX for LuaHBTeX engine.

## SYNOPSIS

**optex** \[ first line \]

## DESCRIPTION

This manual page was derived from the manual page for LaTeX and is not meant to be exhaustive.  The complete documentation for this version of TeX can be found in the info file or manual *Web2C: A TeX implementation*.

**OpTeX** is LuaTeX macro package initialized as the LuaHBTeX format optex.fmt. It is based on Plain TeX macros by Donald Knuth and on OPmac macros from csplain package. For more information about it see http://petr.olsak.net/optex web page.

## SEE ALSO

[**luatex**(1)](/luatex/1.md), [**tex**(1)](/tex/1.md),\

## AUTHORS

The author of  **OpTeX** is Petr Olsak.