&reftitle.setup;
&reftitle.required;
To use Tidy, you will need libtidy installed, available
on the tidy homepage.
As of PHP 7.1.0, the HTML5 aware successor
libtidy5 can be used alternatively.
As of PHP 7.3.0, another option is to use libtidyp.
&reference.tidy.configure;
&reference.tidy.ini;
&reftitle.resources;
&no.resource;