* @brief Loads all configuration values into a cached storage.
*
* All configuration values of the system are stored in global cache
- * which is available under the global variable $a->config
+ * which is available under the global variable Config::$config
*
* @param string $cat The category of the configuration values to load
*
/**
* @brief Deletes the given key from the system configuration.
*
- * Removes the configured value from the stored cache in $a->config
+ * Removes the configured value from the stored cache in Config::$config
* and removes it from the database.
*
* @param string $cat The category of the configuration value