# alternate_on

Source: https://libtmux.org/en/tmux/3.2a/catalog/formats/alternate_on/

> 1 if pane is in alternate screen

format variable tmux3.2a

1 if pane is in alternate screen

* Scope

  Describes the pane being formatted

* Type

  Text

* Usage

  `#{alternate_on}`

## Description[#](https://libtmux.org/en/tmux/3.2a/catalog/formats/alternate_on/#description)

1 if pane is in alternate screen

## Releases[#](https://libtmux.org/en/tmux/3.2a/catalog/formats/alternate_on/#releases)

* [tmux 3.7c](https://libtmux.org/en/tmux/3.7c/catalog/formats/alternate_on/) : present
* [tmux 3.2a](https://libtmux.org/en/tmux/3.2a/catalog/formats/alternate_on/) : present

## Source[#](https://libtmux.org/en/tmux/3.2a/catalog/formats/alternate_on/#source)

* Defined in

  [`format.c:2522`](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/format.c#L2522)

* C source reference

  [`format_cb_alternate_on`](https://libtmux.org/en/tmux/3.2a/reference/c-function-format-c-format_cb_alternate_on/)

* CLI Manual

  [Original manual entry](https://libtmux.org/en/tmux/3.2a/manual/full/#alternate_on)

## Used by[#](https://libtmux.org/en/tmux/3.2a/catalog/formats/alternate_on/#used-by)

Library documentation that names this format variable.

* Go

  [`tmux.FormatValues.AlternateOn`](https://libtmux.org/en/go/latest/reference/tmux-formatvalues-alternateon/), [`tmux.Pane.AlternateOn`](https://libtmux.org/en/go/latest/reference/tmux-pane-alternateon/)