How to interpret mysqldump output? : <p>My intent is to extract the triggers, functions, and stored procedures from a database, edit them, and add them to another database.</p>

<p>Below is a partial output from <code>mysqldump</code>.  I understand how the database is updated with the <code>DROP</code>, <code>CREATE</code>, and<code>INSERT INTO</code> statements, but don't understand the triggers.  I expected the following:</p>

<pre><code>CREATE TRIGGER users_BINS BEFORE INSERT ON users
FOR EACH ROW
if(IFNULL(NEW.idPublic, 0) = 0) THEN
   INSERT INTO _inc_accounts (type, accountsId, idPublic) values ("users",NEW.accountsId,1)
   ON DUPLICATE KEY UPDATE idPublic = idPublic + 1;
   SET NEW.idPublic=(SELECT idPublic FROM _inc_accounts WHERE accountsId=NEW.accountsId AND type="users");
END IF;
</code></pre>

<p>What does <code>/*!50003</code> mean?  I thought it was some comment which would mean the <code>CREATE</code> for the trigger isn't present, but I must be misinterpreting the output. 
 How should one interpret a mysqldump output?</p>

<p><code>mysqldump -u username-ppassword --routines mydb</code></p>

<pre><code>--
-- Table structure for table `users`
--

DROP TABLE IF EXISTS `users`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `users` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `idPublic` int(11) NOT NULL,
  `accountsId` int(11) NOT NULL,
  `firstname` varchar(45) NOT NULL,
  `lastname` varchar(45) NOT NULL,
  `email` varchar(45) NOT NULL,
  `username` varchar(45) NOT NULL,
  `password` char(255) NOT NULL COMMENT 'Password currently uses bcrypt and only requires 60 characters, but may change over time.',
  `tsCreated` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
  `osTicketId` int(11) NOT NULL,
  `phone` varchar(45) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uniqueEmail` (`accountsId`,`email`),
  UNIQUE KEY `uniqueUsername` (`accountsId`,`username`),
  KEY `fk_users_accounts1_idx` (`accountsId`),
  CONSTRAINT `fk_users_accounts1` FOREIGN KEY (`accountsId`) REFERENCES `accounts` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION
) ENGINE=InnoDB AUTO_INCREMENT=35 DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `users`
--

LOCK TABLES `users` WRITE;
/*!40000 ALTER TABLE `users` DISABLE KEYS */;
INSERT INTO `users` VALUES (xxx
/*!40000 ALTER TABLE `users` ENABLE KEYS */;
UNLOCK TABLES;
/*!50003 SET @saved_cs_client      = @@character_set_client */ ;
/*!50003 SET @saved_cs_results     = @@character_set_results */ ;
/*!50003 SET @saved_col_connection = @@collation_connection */ ;
/*!50003 SET character_set_client  = utf8 */ ;
/*!50003 SET character_set_results = utf8 */ ;
/*!50003 SET collation_connection  = utf8_general_ci */ ;
/*!50003 SET @saved_sql_mode       = @@sql_mode */ ;
/*!50003 SET sql_mode              = 'STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ALLOW_INVALID_DATES,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' */ ;
DELIMITER ;;
/*!50003 CREATE*/ /*!50017 DEFINER=`michael`@`12.34.56.78`*/ /*!50003 TRIGGER `users_BINS` BEFORE INSERT ON `users` FOR EACH ROW
BEGIN
if(IFNULL(NEW.idPublic, 0) = 0) THEN
   INSERT INTO _inc_accounts (type, accountsId, idPublic) values ("users",NEW.accountsId,1)
   ON DUPLICATE KEY UPDATE idPublic = idPublic + 1;
   SET NEW.idPublic=(SELECT idPublic FROM _inc_accounts WHERE accountsId=NEW.accountsId AND type="users");
END IF;
END */;;
DELIMITER ;
/*!50003 SET sql_mode              = @saved_sql_mode */ ;
/*!50003 SET character_set_client  = @saved_cs_client */ ;
/*!50003 SET character_set_results = @saved_cs_results */ ;
/*!50003 SET collation_connection  = @saved_col_connection */ ;
</code></pre>
