Manual:$wgOutputEncoding/de-formal

<translate> This feature was removed completely in version <tvar name=ver>1.18.0</tvar>.</translate>

<translate> Language, regional and character encoding settings</translate>: $wgOutputEncoding
The encoding of the output text.
<translate> Introduced in version:</translate>	pre 1.1.0
<translate> Deprecated in version:</translate>	1.5.0
<translate> Removed in version:</translate>	1.18.0 (r87589)
<translate> Allowed values:</translate>	(string)
<translate> Default value:</translate>	`'UTF-8'` (1.5-1.17) `'ISO-8859-1'` (1.1-1.4)
<translate> Other settings:</translate> <translate> Alphabetical</translate> \| <translate> By function</translate>

Details

The encoding of the output text.

LanguageUtf8.php normally overrides this unless you set $wgUseLatin1 to true.