diff --git a/inc/main.php b/inc/main.php
index 216decf..c3a3dd8 100755
--- a/inc/main.php
+++ b/inc/main.php
@@ -8,6 +8,10 @@
 class Main extends PhpObject
 {
 	//Constants
+	const SUCCESS = 'success';
+	const ERROR = 'error';
+	const UNAUTHORIZED = 'unauthorized';
+	const NOT_FOUND = 'unknown action';
 	//...
 	
 	//Objects
@@ -60,6 +64,12 @@ class Main extends PhpObject
 		//...
 	}
 	
+	private function install()
+	{
+		//Install DB
+		$this->oMySql->install();
+	}
+	
 	private function setContext($sProcessPage)
 	{
 		$this->asContext['process_page'] = basename($sProcessPage);