-#define LOG_FATAL 0x0001
-#define LOG_DEBUG 0x0002
-#define LOG_WARN 0x0004
-#define LOG_LOG 0x0008
-#define LOG_ERRNO 0x0010 /* append strerror to message */
-#define LOG_FILE 0x0020
-#define LOG_APP 0x0040 /* For application level events such as new-connection */
-#define LOG_MALLOC 0x0080 /* debugging mallocs */
-#define LOG_NOTIME 0x0100 /* do not output date and time */
+/* The old LOG_ bit names are here for compatibility only. They may
+ * conflict with bits defined in syslog.h, or other places. 'LOG'
+ * really is not such a good name. YLOG must be more unique
+ */
+#define LOG_FATAL YLOG_FATAL
+#define LOG_DEBUG YLOG_DEBUG
+#define LOG_WARN YLOG_WARN
+#define LOG_LOG YLOG_LOG /* Deprecated, use the modern dynamic log levels*/
+#define LOG_ERRNO YLOG_ERRNO
+ /* LOG_FILE discontinued */
+#define LOG_APP YLOG_APP /* Deprecated */
+ /* LOG_MALLOC discontinued */
+#define LOG_NOTIME YLOG_NOTIME /* do not output date and time */
+#define LOG_APP2 YLOG_APP2 /* deprecated */
+#define LOG_APP3 YLOG_APP3 /* deprecated */
+#define LOG_FLUSH YLOG_FLUSH
+ /* LOG_LOGLVL so new that nobody should be using it. */