diff --git a/src/atlasViewer/atlasViewer.constantService.service.ts b/src/atlasViewer/atlasViewer.constantService.service.ts
index 2370bb3e173e508d26aaa32ece4f025d632ed3b3..1295b188578881870bc4e958ad0600f3f81b0742 100644
--- a/src/atlasViewer/atlasViewer.constantService.service.ts
+++ b/src/atlasViewer/atlasViewer.constantService.service.ts
@@ -8,6 +8,8 @@ import { ViewerStateInterface, Property, FETCHED_METADATA } from "../services/st
 })
 
 export class AtlasViewerConstantsServices{
+
+  /* to be provided by KG in future */
   public templateUrls = [
     // 'res/json/infant.json',
     'res/json/bigbrain.json',
@@ -17,6 +19,7 @@ export class AtlasViewerConstantsServices{
     'res/json/allenMouse.json'
   ]
 
+  /* to be provided by KG in future */
   private _mapArray : [string,string[]][] = [
     [ 'JuBrain Cytoarchitectonic Atlas' ,  
       [
diff --git a/src/index.html b/src/index.html
index ef550de054bbafdb72382b29563055a3578e9d8e..f944aa7b1c9a37a8995f39cb1e8cb200a359b952 100644
--- a/src/index.html
+++ b/src/index.html
@@ -11,10 +11,11 @@
 </head>
 <body>
   <atlas-viewer>
-    Loading the atlas viewer 
-    <span class = "homeAnimationDots loadingAnimationDots">&bull;</span>
-    <span class = "homeAnimationDots loadingAnimationDots">&bull;</span>
-    <span class = "homeAnimationDots loadingAnimationDots">&bull;</span>
+    <h1 style = "text-align:center;">
+      <span class = "homeAnimationDots loadingAnimationDots">&bull;</span>
+      <span class = "homeAnimationDots loadingAnimationDots">&bull;</span>
+      <span class = "homeAnimationDots loadingAnimationDots">&bull;</span>
+    </h1>
   </atlas-viewer>
 </body>
 </html>
\ No newline at end of file
diff --git a/src/main-aot.ts b/src/main-aot.ts
index 8db74c3ebc1ecfb457b0b95096539691053ffde9..cae586c5666a0d017c9492f7935a0c4406a150d7 100644
--- a/src/main-aot.ts
+++ b/src/main-aot.ts
@@ -2,10 +2,14 @@ import 'zone.js'
 
 import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'
 import { MainModule } from './main.module';
+import { enableProdMode } from '@angular/core';
 
 const requireAll = (r:any) => {r.keys().forEach(r)}
 requireAll(require.context('./res/ext', false, /\.json$/))
 requireAll(require.context('./res/images', true, /\.jpg|\.png/))
 requireAll(require.context('./plugin_examples/jugex', false))
 
+/* aot = production mode */
+enableProdMode()
+
 platformBrowserDynamic().bootstrapModule(MainModule)
\ No newline at end of file