WordPress at a glance
function is not described

_WP_Editors::wp_fullscreen_html() public WP 3.2.0

Deprecated from version 4.3.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Outputs the HTML for distraction-free writing mode.

{} It's a method of the class: _WP_Editors{}

This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.

No Hooks.

Return

````. Null. Nothing.

Usage

$result = _WP_Editors::wp_fullscreen_html();

Changelog

Since 3.2.0 Introduced.
Deprecated 4.3.0

Code of _WP_Editors::wp_fullscreen_html() WP 5.7

<?php
public static function wp_fullscreen_html() {
	_deprecated_function( __FUNCTION__, '4.3.0' );
}