Sends a referrer policy header so referrers are not sent externally from administration screens.

Displays the viewport meta in the admin.

Checks lock status for posts displayed on the Posts screen.

Checks if the user needs to update PHP.

Description Pending

Description Pending

Disables suspension of Heartbeat on the Add/Edit Post screens.

Makes a tree structure for the plugin file editor’s file list.

Makes a tree structure for the theme file editor’s file list.

Outputs JS that reloads the page if the user navigated to it with the Back or Forward button.