diff --git a/config/functions_init.php b/config/functions_init.php
index 20d14b7..5316b09 100644
--- a/config/functions_init.php
+++ b/config/functions_init.php
@@ -1,4 +1,6 @@
 <?php
+
+  // CHECKING ERROR ENV AND PRINT RESULT
   function error_env($option){
   global $env;
   if (empty($env)){
@@ -16,7 +18,106 @@
   }else{
     echo "ERROR: Wrong attribute in declared in the function!";
     die;
+    }
+  }
+
+  function php_pages($option=null, $domain_shows=null){
+    // Required files or shows error if debug has been set to on.
+    if ($option == "error"){
+      $required_pages=[
+        PAGES_FOLD . "404.php",
+        PAGES_FOLD . "home.php"
+      ];
+
+      $missing_pages=[];
+
+      foreach($required_pages as $required){
+       if (! file_exists($required)){
+        array_push($missing_pages, $required);
+       }
+      }
+
+      if (! empty($missing_pages)){
+        if (DEBUG){
+          echo "<h1>ERROR: Missing Required Pages:</h1>";
+          echo "<ul>";
+            foreach ($missing_pages as $pagepath){
+              echo "<li>Required file '" . $pagepath . "' is missing!</li>";
+            }
+          echo "</ul>";
+        
+        }
+        die("Required pages are missing!.");
+      }
+      
+    }
+
+    if (isset($_GET["page"])){
+      // ---- OPTIONS IF PAGE HAS BEEN DECLARED ----
+      $pagecheck=$_GET["page"];
+      if (empty($pagecheck)){
+        $page="home";
+      }elseif(file_exists(PAGES_FOLD . $pagecheck . ".php")){
+        $page=$pagecheck;
+      }else{
+        $page="404";
+      }
+      
+      // title for pages
+      if ( $domain_shows == "show" ){
+        $page_title=DOMAIN . " | " . ucfirst($page);
+      }else{
+        $page_title= ucfirst($page);
+      }
+
+      // return call
+      switch($option){
+        case "return_page":
+          return $page;
+          break;
+        case "return_title":
+          return $page_title;
+          break;
+        case "page":
+          echo $page;
+          break;
+        case "title":
+          echo $page_title;
+          break;
+        default:
+          echo $page;
+      }
+
+    }else{
+      // ---- OPTIONS IF PAGE HAS NOT BEEN DECLARED ----
+      $page = "home";
+
+      // title for pages
+      if ( $domain_shows == "show" ){
+        $page_title=DOMAIN . " | " . ucfirst($page);
+      }else{
+        $page_title= ucfirst($page);
+      }
+
+      // return call
+      switch($option){
+        case "return_page":
+          return $page;
+          break;
+        case "return_title":
+          return $page_title;
+          break;
+        case "page":
+          echo $page;
+          break;
+        case "title":
+          echo $page_title;
+          break;
+        default:
+          echo $page;
+      }
+      
+    }
   }
   
-  }
 ?>
\ No newline at end of file
diff --git a/config/init.php b/config/init.php
index 7a0f3d2..67e9d66 100644
--- a/config/init.php
+++ b/config/init.php
@@ -1,5 +1,6 @@
 <?php
-  $env="";
+  include("config/functions_init.php");
+  $env="generic";
 
   switch($env){
     /*------ DON'T TOUCH THIS PART ------ */
@@ -13,7 +14,7 @@
       break;
     /* ----------------------------------- */
     default:
-      include("config/functions_init.php");
+      // Showing error page by default.
       include("pages/env-error.php");
       die;
 
diff --git a/config/settings.php b/config/settings.php
index 937e6df..bb97f9a 100644
--- a/config/settings.php
+++ b/config/settings.php
@@ -1,4 +1,7 @@
 <?php
+// -- GENERAL SETTING --
+$debug="on";
+
 // --- DB SETTINGS  ---
 $db_needed="no";
 $db_debug="yes";
@@ -7,9 +10,14 @@ $db_name="database-name";
 $db_user="database-user";
 $db_pass="database-user-password";
 
+//-------------------------------------------------------------------------------------
+//                        --- DON'T CHANGE ALL THE CODE BELOW!!! ---                        
+//-------------------------------------------------------------------------------------
 
+// --- GENERAL SECTION CONFIGURATION 
+if ($debug == "on"){ define("DEBUG",true);} else { define("DEBUG", false); }
 
-// --- DON'T CHANGE ALL THE CODE BELOW ---
+// --- DB SECTION CONFIGURATION
 if ($db_needed == "yes"){
   define("DB_HOST", $db_host);
   define("DB_USER", $db_user);
@@ -17,6 +25,5 @@ if ($db_needed == "yes"){
   define("DB_NAME", $db_name);
   define("DB_DEBUG", $db_debug); 
   require_once(CONFIG_FOLD . "db.php");
-  
 }
 ?>
\ No newline at end of file
diff --git a/index.php b/index.php
index 013d0c9..e222efc 100644
--- a/index.php
+++ b/index.php
@@ -1,5 +1,6 @@
 <?php
   include("./config/init.php");
+  php_pages("error");
   include(ROOT_DIR . "/templates/header.php");
   include("./pages/home.php");
   include("./templates/footer.php");
diff --git a/pages/home.php b/pages/home.php
deleted file mode 100644
index e69de29..0000000
diff --git a/templates/header.php b/templates/header.php
index a08b6a0..4e0f6f9 100644
--- a/templates/header.php
+++ b/templates/header.php
@@ -4,7 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <?php include(INCLUDES_FOLD . "head_links.php"); ?>
-  <title>Document</title>
+  <title><?php php_pages("title", "show"); ?></title>
 </head>
 <body>
   <header>