diff --git a/readme.md b/readme.md
index b2952fd..214ffa4 100644
--- a/readme.md
+++ b/readme.md
@@ -51,6 +51,7 @@ Click the url in the output info generated by flask (`http://127.0.0.1:5000/` fo
 ## launch from executable file
 <details>
   <summary>Click to expand</summary>
+  
 - Windows: Download [onnx-modifier.exe (27.6MB)](https://drive.google.com/file/d/1y7mYlvF0G5iiNDgOFh1ESXlTs8I2ipVQ/view?usp=sharing), double-click it and enjoy.
   - Edge browser is used for runtime environment by default.
 
diff --git a/static/index.js b/static/index.js
index 29ed2e0..98be550 100644
--- a/static/index.js
+++ b/static/index.js
@@ -359,30 +359,32 @@ host.BrowserHost = class {
         // informs flaskwebgui to keep server running while gui is running
         // as illusrated in https://github.com/ClimenteA/flaskwebgui#install
         // and here: https://stackoverflow.com/questions/39993676/code-inside-domcontentloaded-event-not-working
-        async function getRequest(url='') {
-            const response = await fetch(url, {
-            method: 'GET', 
-            cache: 'no-cache'
-            })
-            return response.json()
-        }
-
-        if (this.document.readyState !== 'loading') {
-            console.log('document is already ready, just execute code here');
-
-            let url = this.document.location
-            let route = "/flaskwebgui-keep-server-alive"
-            // let interval_request = 3 * 1000 //sec
-            let interval_request = 0.5 * 1000 //sec
-
-            function keep_alive_server(){
-                getRequest(url + route)
-                .then(data => {})
-                // .then(data => console.log(data))
-            }
-
-            setInterval(keep_alive_server, interval_request)
-        } 
+        // ============ to make webgui applications, the following code block shoud be added. ============ //
+        // async function getRequest(url='') {
+        //     const response = await fetch(url, {
+        //     method: 'GET', 
+        //     cache: 'no-cache'
+        //     })
+        //     return response.json()
+        // }
+
+        // if (this.document.readyState !== 'loading') {
+        //     console.log('document is already ready, just execute code here');
+
+        //     let url = this.document.location
+        //     let route = "/flaskwebgui-keep-server-alive"
+        //     // let interval_request = 3 * 1000 //sec
+        //     let interval_request = 0.5 * 1000 //sec
+
+        //     function keep_alive_server(){
+        //         getRequest(url + route)
+        //         .then(data => {})
+        //         // .then(data => console.log(data))
+        //     }
+
+        //     setInterval(keep_alive_server, interval_request)
+        // } 
+        // ============ to make webgui applications, the above code block shoud be added. ============ //
 
     }