diff --git a/src/main.tsx b/src/main.tsx
index 35a9f7f4..30d6fb92 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -29,6 +29,21 @@ function isBlank(s : string) : boolean {
     return (s == null || s == "");
 }
 
+function windowLinesDOMId(windowid : string) {
+    return "window-lines-" + windowid;
+}
+
+function scrollDiv(div : any, amt : number) {
+    if (div == null) {
+        return;
+    }
+    let newScrollTop = div.scrollTop + amt;
+    if (newScrollTop < 0) {
+        newScrollTop = 0;
+    }
+    div.scrollTo({top: newScrollTop, behavior: "smooth"});
+}
+
 function interObsCallback(entries) {
     let now = Date.now();
     entries.forEach((entry) => {
@@ -454,6 +469,23 @@ class TextAreaInput extends React.Component<{}, {}> {
                     return;
                 }
             }
+            if (e.code == "PageUp" || e.code == "PageDown") {
+                e.preventDefault();
+                let infoScroll = GlobalModel.hasScrollingInfoMsg();
+                if (infoScroll) {
+                    let div = document.querySelector(".cmd-iinput-info");
+                    scrollDiv(div, (e.code == "PageUp" ? -500 : 500));
+                }
+                else {
+                    let win = GlobalModel.getActiveWindow();
+                    if (win == null) {
+                        return;
+                    }
+                    let id = windowLinesDOMId(win.windowId);
+                    let div = document.getElementById(id);
+                    scrollDiv(div, (e.code == "PageUp" ? -500 : 500));
+                }
+            }
             // console.log(e.code, e.keyCode, e.key, event.which, ctrlMod, e);
         })();
     }
@@ -696,7 +728,7 @@ class ScreenWindowView extends React.Component<{sw : ScreenWindow}, {}> {
     }
 
     getLinesDOMId() {
-        return "window-lines-" + this.getWindowId();
+        return windowLinesDOMId(this.getWindowId());
     }
 
     @boundMethod
diff --git a/src/model.ts b/src/model.ts
index 3d974ca7..dd01f46e 100644
--- a/src/model.ts
+++ b/src/model.ts
@@ -4,7 +4,7 @@ import {boundMethod} from "autobind-decorator";
 import {handleJsonFetchResponse, base64ToArray, genMergeData, genMergeSimpleData} from "./util";
 import {TermWrap} from "./term";
 import {v4 as uuidv4} from "uuid";
-import type {SessionDataType, WindowDataType, LineType, RemoteType, HistoryItem, RemoteInstanceType, RemotePtrType, CmdDataType, FeCmdPacketType, TermOptsType, RemoteStateType, ScreenDataType, ScreenWindowType, ScreenOptsType, LayoutType, PtyDataUpdateType, ModelUpdateType, UpdateMessage, InfoType, CmdLineUpdateType} from "./types";
+import type {SessionDataType, WindowDataType, LineType, RemoteType, HistoryItem, RemoteInstanceType, RemotePtrType, CmdDataType, FeCmdPacketType, TermOptsType, RemoteStateType, ScreenDataType, ScreenWindowType, ScreenOptsType, LayoutType, PtyDataUpdateType, ModelUpdateType, UpdateMessage, InfoType, CmdLineUpdateType, UIContextType} from "./types";
 import {WSControl} from "./ws";
 
 var GlobalUser = "sawka";
@@ -769,7 +769,7 @@ class Model {
         let key = sessionId + "/" + cmdId + "/" + width;
         this.termUsedRowsCache[key] = usedRows;
     }
-
+    
     contextScreen(e : any, screenId : string) {
         console.log("model", screenId);
         getApi().contextScreen({screenId: screenId}, {x: e.x, y: e.y});
@@ -791,6 +791,44 @@ class Model {
         }
     }
 
+    getUIContext() : UIContextType {
+        let rtn : UIContextType = {
+            sessionid : null,
+            screenid : null,
+            windowid : null,
+            remote : null,
+        };
+        let session = this.getActiveSession();
+        if (session != null) {
+            rtn.sessionid = session.sessionId;
+            let screen = session.getActiveScreen();
+            if (screen != null) {
+                rtn.screenid = screen.screenId;
+                let win = this.getActiveWindow();
+                if (win != null) {
+                    rtn.windowid = win.windowId;
+                    rtn.remote = win.curRemote.get();
+                }
+            }
+        }
+        return rtn;
+    }
+
+    hasScrollingInfoMsg() : boolean {
+        if (!this.infoShow.get()) {
+            return false;
+        }
+        let info = this.infoMsg.get();
+        if (info == null) {
+            return false;
+        }
+        let div = document.querySelector(".cmd-input-info");
+        if (div == null) {
+            return false;
+        }
+        return div.scrollHeight > div.clientHeight;
+    }
+
     clearInfoMsg(setNull : boolean) {
         this.infoTimeoutId = null;
         mobx.action(() => {
@@ -1162,13 +1200,14 @@ class Model {
         });
     }
 
-    submitCommand(metaCmd : string, metaSubCmd : string, args : string[], kwargs : Record<string, string>, interactive : boolean) {
+    submitCommand(metaCmd : string, metaSubCmd : string, args : string[], kwargs : Record<string, string>, interactive : boolean) : void {
         let pk : FeCmdPacketType = {
             type: "fecmd",
             metacmd: metaCmd,
             metasubcmd: metaSubCmd,
             args: args,
             kwargs: Object.assign({}, this.getClientKwargs(), kwargs),
+            uicontext : this.getUIContext(),
         };
         this.submitCommandPacket(pk, interactive);
     }
@@ -1179,6 +1218,7 @@ class Model {
             metacmd: "eval",
             args: [cmdStr],
             kwargs: this.getClientKwargs(),
+            uicontext : this.getUIContext(),
         };
         if (!addToHistory) {
             pk.kwargs["nohist"] = "1";
@@ -1186,7 +1226,7 @@ class Model {
         this.submitCommandPacket(pk, interactive)
     }
 
-    loadSessionList() {
+    loadSessionList() : void {
         let url = new URL("http://localhost:8080/api/get-all-sessions");
         fetch(url).then((resp) => handleJsonFetchResponse(url, resp)).then((data) => {
             this.runUpdate(data.data, false);
@@ -1331,7 +1371,7 @@ class InputClass {
     clearCmdInput() : void {
         mobx.action(() => {
             GlobalModel.clearInfoMsg(true);
-            GlobalModel.clearCurLine();
+            GlobalModel.inputModel.clearCurLine();
         })();
     }
 
diff --git a/src/types.ts b/src/types.ts
index 3d8a40d1..baa54c5c 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -137,12 +137,20 @@ type CmdRemoteStateType = {
     cwd : string,
 };
 
+type UIContextType = {
+    sessionid : string,
+    screenid : string,
+    windowid : string,
+    remote : RemotePtrType,
+};
+
 type FeCmdPacketType = {
     type : string,
     metacmd : string,
     metasubcmd? : string,
     args : string[],
     kwargs : Record<string, string>;
+    uicontext : UIContextType,
 };
 
 type WatchScreenPacketType = {
@@ -207,6 +215,11 @@ type ModelUpdateType = {
     info? : InfoType,
     cmdline? : CmdLineUpdateType,
     remote? : RemoteType,
+    history? : HistoryInfoType,
+};
+
+type HistoryInfoType = {
+    items : HistoryItemType[],
 };
 
 type CmdLineUpdateType = {
@@ -226,4 +239,4 @@ type InfoType = {
 
 type UpdateMessage = PtyDataUpdateType | ModelUpdateType;
 
-export type {SessionDataType, LineType, RemoteType, RemoteStateType, RemoteInstanceType, WindowDataType, HistoryItem, CmdRemoteStateType, FeCmdPacketType, TermOptsType, CmdStartPacketType, CmdDonePacketType, CmdDataType, ScreenDataType, ScreenOptsType, ScreenWindowType, LayoutType, PtyDataUpdateType, ModelUpdateType, UpdateMessage, InfoType, CmdLineUpdateType, RemotePtrType};
+export type {SessionDataType, LineType, RemoteType, RemoteStateType, RemoteInstanceType, WindowDataType, HistoryItem, CmdRemoteStateType, FeCmdPacketType, TermOptsType, CmdStartPacketType, CmdDonePacketType, CmdDataType, ScreenDataType, ScreenOptsType, ScreenWindowType, LayoutType, PtyDataUpdateType, ModelUpdateType, UpdateMessage, InfoType, CmdLineUpdateType, RemotePtrType, UIContextType};