diff -r 016836529e6c -r eb3676c6929b java/sql-dk/src/info/globalcode/sql/dk/CLIStarter.java
--- a/java/sql-dk/src/info/globalcode/sql/dk/CLIStarter.java	Fri Jan 10 20:13:16 2014 +0100
+++ b/java/sql-dk/src/info/globalcode/sql/dk/CLIStarter.java	Fri Jan 10 23:21:28 2014 +0100
@@ -45,6 +45,7 @@
 import javax.xml.bind.Unmarshaller;
 
 /**
+ * Entry point of the command line interface of SQL-DK.
  *
  * @author Ing. František Kučera (frantovo.cz)
  */
@@ -53,6 +54,7 @@
 	// help:exit-codes
 	public static final int EXIT_SUCCESS = 0; // doc:success
 	public static final int EXIT_UNEXPECTED_ERROR = 1; // doc:unexpected error (probably bug)
+	// 2 is reserved: http://www.tldp.org/LDP/abs/html/exitcodes.html#EXITCODESREF
 	public static final int EXIT_SQL_ERROR = 3; // doc:SQL error
 	public static final int EXIT_CLI_PARSE_ERROR = 4; // doc:CLI options parse error
 	public static final int EXIT_CLI_VALIDATE_ERROR = 5; // doc:CLI options validation error