+/**
+ * Define constants for SquirrelMail debug modes.
+ * Note that these are binary so that modes can be
+ * mixed and matched, and they are also ordered from
+ * minor to severe. When adding new modes, please
+ * order them in a sensical way (MODERATE is the 10th
+ * bit; ADVANCED is the 20th bit).
+ * @since 1.5.2
+ */
+define('SM_DEBUG_MODE_OFF', 0); // complete error suppression
+define('SM_DEBUG_MODE_SIMPLE', 1); // PHP E_ERROR
+define('SM_DEBUG_MODE_MODERATE', 512); // PHP E_ALL
+define('SM_DEBUG_MODE_ADVANCED', 524288); // PHP E_ALL plus log errors intentionally suppressed
+define('SM_DEBUG_MODE_STRICT', 536870912); // PHP E_STRICT
+