* Get a particular system-wide config variable given the category name
* ($family) and a key.
*
+ * Note: Boolean variables are defined as 0/1 in the database
+ *
* @param string $cat The category of the configuration value
* @param string $key The configuration key to query
*
- * @return mixed Stored value or "!<unset>!" if it does not exist
+ * @return null|mixed Stored value or null if it does not exist
*/
public function get($cat, $key);
* and removes it from the database.
*
* @param string $cat The category of the configuration value
- * @param string $key The configuration key to delete
+ * @param string $key The configuration key to delete
*
- * @return mixed
+ * @return bool Operation success
*/
public function delete($cat, $key);