Was bedeutet “# @ +” im Kommentar “Authentication Unique Keys and Salts”?

In wp-config-sample.php gibt es diesen Kommentar

 /**#@+ * Authentication Unique Keys and Salts. * * Change these to different unique phrases! * You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service} * You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again. * * @since 2.6.0 */ 

Was bedeutet das #@+ ?

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