diff --git a/tools/server/public_simplechat/readme.md b/tools/server/public_simplechat/readme.md
index a889645f6f..14969f5508 100644
--- a/tools/server/public_simplechat/readme.md
+++ b/tools/server/public_simplechat/readme.md
@@ -906,6 +906,9 @@ Chat Session specific settings
     tool call proxy server.
   * however any resultant changes to the available tool calls list wont get reflected,
     till one reloads the program.
+* uirefresh helper ensures client side sliding window is always satisfied.
+  * now it remove messages no longer in the sliding window, so user only sees what is sent to the ai server,
+    in the chat session messages ui.
 
 
 #### ToDo
@@ -933,14 +936,6 @@ session to the end user, but inturn not to be sent to the ai server. Ex current
 Updating system prompt, will reset user input area fully now, which seems a good enough behaviour, while
 keeping the code flow also simple and straight, do I need to change it, I dont think so as of now.
 
-Should I have a toggle to control whether show only the messages sent to ai server based on sliding window
-or show all the messages (ie even beyond the sliding window)?
-* rather previously with chat_show only whats in current sliding window was being shown, but now with
-  the uirefresh based logic, all messages from last chat_show will be shown irrespective of whether still
-  in ai server handshake related sliding window or not.
-* Update UIRefresh helper to optionally remove messages no longer in the sliding window, so user only sees
-  what is sent to the ai server in the chat session messages ui.
-
 For now amn't bringing in mozilla/github/standard-entities pdf, md, mathslatex etal javascript libraries for
 their respective functionalities.
 
diff --git a/tools/server/public_simplechat/simplechat.js b/tools/server/public_simplechat/simplechat.js
index 273f6d3e28..6f7706ff85 100644
--- a/tools/server/public_simplechat/simplechat.js
+++ b/tools/server/public_simplechat/simplechat.js
@@ -481,6 +481,9 @@ function usage_note(sRecentUserMsgCnt) {
         <li> ChatHistInCtxt, MaxTokens, ModelCtxt window to expand</li>
         </ul>
     <li> ${AI_TC_SESSIONNAME} session keeps tool calls disabled, to avoid recursive...</li>
+        <ul class="ul2">
+        <li> Used by external_ai tool call, which allows ai calling ai, as needed.</li>
+        </ul>
     </ul>
     </details>`;
     return sUsageNote;
@@ -1421,6 +1424,7 @@ class MultiChatUI {
         // Create main section
         let secMain = document.createElement('section')
         secMain.id = `cmuid${msg.uniqId}`
+        secMain.dataset.cmuid = String(msg.uniqId)
         secMain.classList.add(`role-${msg.ns.role}`)
         secMain.classList.add('chat-message')
         secMain.addEventListener('mouseenter', (ev)=>{
@@ -1510,7 +1514,7 @@ class MultiChatUI {
     }
 
     /**
-     * Refresh UI wrt given chatId, provided it matches the currently selected chatId
+     * Refresh UI (optionally bruteforce) wrt given chatId, provided it matches the currently selected chatId
      *
      * Show the chat contents in elDivChat.
      * Also update
@@ -1522,6 +1526,8 @@ class MultiChatUI {
      * * option to load prev saved chat if any
      * * as well as settings/info.
      *
+     * Ensures only messages with in the currently set sliding window are shown
+     *
      * @param {string} chatId
      * @param {boolean} bClear
      * @param {boolean} bShowInfoAll
@@ -1585,6 +1591,8 @@ class MultiChatUI {
      * If the houseKeeping.clear flag is set then fallback to
      * the brute force full on chat_show.
      *
+     * Also ensures only messages with in the currently set sliding window are shown
+     *
      * @param {string} chatId
      * @param {number} lastN
      */
@@ -1599,9 +1607,20 @@ class MultiChatUI {
         }
         this.ui_userinput_reset(false)
         this.ui_toolcallvalidated_as_needed(new ChatMessageEx());
+        let chatToShow = chat.recent_chat(chat.cfg.chatProps.iRecentUserMsgCnt);
+        // Remove messages outside sliding window
+        /** @type {NodeListOf<HTMLElement>} */
+        let elList = this.elDivChat.querySelectorAll('[id*="cmuid"]')
+        for (const el of elList) {
+            if (Number(el.dataset.cmuid) >= chatToShow[0].uniqId) {
+                break
+            }
+            el.remove()
+        }
+        // Refresh last few messages in the chat history, as requested by user
         for(let i=lastN; i > 0; i-=1) {
-            let msg = chat.xchat[chat.xchat.length-i]
-            let nextMsg = chat.xchat[chat.xchat.length-(i-1)]
+            let msg = chatToShow[chatToShow.length-i]
+            let nextMsg = chatToShow[chatToShow.length-(i-1)]
             if (msg) {
                 this.chatmsg_ui_remove(msg.uniqId)
                 this.show_message(this.elDivChat, chat.chatId, msg, (i-1), nextMsg)