- Patch #102603 by webchick: documenting watchdog constants.

includes/bootstrap.inc

@@ -13,8 +13,22 @@
 define('CACHE_NORMAL', 1);
 define('CACHE_AGGRESSIVE', 2);
 
+/**
+ * Indicates a notice-level watchdog event; these are normally notifications
+ * of normal system events that have occurred and can usually be safely ignored.
+ */
 define('WATCHDOG_NOTICE', 0);
+
+/**
+ * Indicates a warning-level watchdog event; this can be triggered by an error
+ * in a module that does not impact the overall functionality of the site.
+ */
 define('WATCHDOG_WARNING', 1);
+
+/**
+ * Indicates an error-level watchdog event; could be indicative of an attempt
+ * to compromise the security of the site, or a serious system error.
+ */
 define('WATCHDOG_ERROR', 2);
 
 /**