-#define LOG_FATAL 0x00000001
-#define LOG_DEBUG 0x00000002
-#define LOG_WARN 0x00000004
-#define LOG_LOG 0x00000008
-#define LOG_ERRNO 0x00000010 /* append strerror to message */
-#define LOG_FILE 0x00000020
-#define LOG_APP 0x00000040 /* Application level events (new-connection) */
-#define LOG_MALLOC 0x00000080 /* debugging mallocs */
-#define LOG_NOTIME 0x00000100 /* do not output date and time */
-#define LOG_APP2 0x00000200 /* Application-level events, such as api calls */
-#define LOG_APP3 0x00000400 /* For more application-level events */
-#define LOG_FLUSH 0x00000800 /* Flush log after every write (DEBUG does too) */
+/* 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
+#define LOG_FILE 0x00000020 /* Deprecated - not in ylog.h at all*/
+#define LOG_APP 0x00000040 /* Deprecated - not in ylog.h at all*/
+#define LOG_MALLOC YLOG_MALLOC /* deprecated */
+#define LOG_NOTIME YLOG_NOTIME /* do not output date and time */
+#define LOG_APP2 0x00000200 /* Deprecated - not in ylog.h at all*/
+#define LOG_APP3 0x00000400 /* Deprecated - not in ylog.h at all*/
+#define LOG_FLUSH YLOG_FLUSH
+ /* LOG_LOGLVL is a new one in ylog.h. So new that no log.h users should
+ * use it */