diff --git a/src/main.tsx b/src/main.tsx
index 0b02843d..868c7366 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -9,6 +9,7 @@ import dayjs from "dayjs";
 import {If, For, When, Otherwise, Choose} from "tsx-control-statements/components";
 import cn from "classnames";
 import type {SessionDataType, LineType, CmdDataType, RemoteType, RemoteStateType, RemoteInstanceType, RemotePtrType, HistoryItem, HistoryQueryOpts, RemoteEditType, FeStateType, ContextMenuOpts, BookmarkType, RenderModeType} from "./types";
+import type * as T from "./types";
 import localizedFormat from 'dayjs/plugin/localizedFormat';
 import {GlobalModel, GlobalCommandRunner, Session, Cmd, Window, Screen, ScreenWindow, riToRPtr, windowWidthToCols, windowHeightToRows, termHeightFromRows, termWidthFromCols} from "./model";
 import {isModKeyPress} from "./util";
@@ -2488,6 +2489,41 @@ class LoadingSpinner extends React.Component<{}, {}> {
     }
 }
 
+@mobxReact.observer
+class AlertModal extends React.Component<{}, {}> {
+    closeModal() : void {
+        mobx.action(() => {
+            GlobalModel.alertMessage.set(null);
+        })();
+    }
+    
+    render() {
+        let message = GlobalModel.alertMessage.get();
+        if (message == null) {
+            return null;
+        }
+        let title = message.title ?? "Alert";
+        return (
+            <div className="modal is-active">
+                <div className="modal-background"/>
+                <div className="modal-card">
+                    <header className="modal-card-head">
+                        <p className="modal-card-title">{title}</p>
+                        <button className="delete"></button>
+                    </header>
+                    <section className="modal-card-body">
+                        <p>{message.message}</p>
+                    </section>
+                    <footer className="modal-card-foot">
+                        <button className="button">OK</button>
+                    </footer>
+                </div>
+                <button class="modal-close is-large" aria-label="close"></button>
+            </div>
+        );
+    }
+}
+
 @mobxReact.observer
 class Main extends React.Component<{}, {}> {
     constructor(props : any) {
@@ -2533,6 +2569,7 @@ class Main extends React.Component<{}, {}> {
                 <If condition={!GlobalModel.ws.open.get() || !GlobalModel.localServerRunning.get()}>
                     <DisconnectedModal/>
                 </If>
+                <AlertModal/>
             </div>
         );
     }
diff --git a/src/model.ts b/src/model.ts
index 40e58663..77413de9 100644
--- a/src/model.ts
+++ b/src/model.ts
@@ -5,7 +5,7 @@ import {debounce} from "throttle-debounce";
 import {handleJsonFetchResponse, base64ToArray, genMergeData, genMergeSimpleData, boundInt, isModKeyPress} 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, UIContextType, HistoryInfoType, HistoryQueryOpts, FeInputPacketType, TermWinSize, RemoteInputPacketType, FeStateType, ContextMenuOpts, RendererContext, RendererModel, PtyDataType, BookmarkType, ClientDataType, HistoryViewDataType} 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, HistoryInfoType, HistoryQueryOpts, FeInputPacketType, TermWinSize, RemoteInputPacketType, FeStateType, ContextMenuOpts, RendererContext, RendererModel, PtyDataType, BookmarkType, ClientDataType, HistoryViewDataType, AlertMessageType} from "./types";
 import {WSControl} from "./ws";
 import {ImageRendererModel} from "./imagerenderer";
 import {measureText, getMonoFontSize} from "./textmeasure";
@@ -1834,7 +1834,7 @@ class HistoryViewModel {
             setTimeout(this.clearActiveDelete, 2000);
             return;
         }
-        console.log("DELETE!");
+        GlobalModel.showAlert({message: "DELETE!"});
     }
 
     @boundMethod
@@ -2127,6 +2127,7 @@ class Model {
     isDev : boolean;
     activeMainView : OV<"session" | "history" | "bookmarks"> = mobx.observable.box("session", {name: "activeMainView"});
     termFontSize : CV<number>;
+    alertMessage : OV<AlertMessageType> = mobx.observable.box(null, {name: "alertMessage"});
 
     inputModel : InputModel;
     bookmarksModel : BookmarksModel;
@@ -2174,6 +2175,12 @@ class Model {
         setTimeout(() => this.getClientData(), 10);
     }
 
+    showAlert(alertMessage : AlertMessageType) : void {
+        mobx.action(() => {
+            this.alertMessage.set(alertMessage);
+        })();
+    }
+
     getBaseHostPort() : string {
         if (this.isDev) {
             return DevServerEndpoint;
diff --git a/src/types.ts b/src/types.ts
index 143470c0..33338def 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -420,6 +420,11 @@ type PlaybookEntryType = {
     remove : boolean,
 };
 
+type AlertMessageType = {
+    title : string,
+    message : string,
+};
+
 type RenderModeType = "normal" | "collapsed";
 
-export type {SessionDataType, LineType, RemoteType, RemoteStateType, RemoteInstanceType, WindowDataType, HistoryItem, CmdRemoteStateType, FeCmdPacketType, TermOptsType, CmdStartPacketType, CmdDataType, ScreenDataType, ScreenOptsType, ScreenWindowType, LayoutType, PtyDataUpdateType, ModelUpdateType, UpdateMessage, InfoType, CmdLineUpdateType, RemotePtrType, UIContextType, HistoryInfoType, HistoryQueryOpts, WatchScreenPacketType, TermWinSize, FeInputPacketType, RemoteInputPacketType, RemoteEditType, FeStateType, ContextMenuOpts, RendererContext, WindowSize, RendererModel, PtyDataType, BookmarkType, ClientDataType, PlaybookType, PlaybookEntryType, HistoryViewDataType, RenderModeType};
+export type {SessionDataType, LineType, RemoteType, RemoteStateType, RemoteInstanceType, WindowDataType, HistoryItem, CmdRemoteStateType, FeCmdPacketType, TermOptsType, CmdStartPacketType, CmdDataType, ScreenDataType, ScreenOptsType, ScreenWindowType, LayoutType, PtyDataUpdateType, ModelUpdateType, UpdateMessage, InfoType, CmdLineUpdateType, RemotePtrType, UIContextType, HistoryInfoType, HistoryQueryOpts, WatchScreenPacketType, TermWinSize, FeInputPacketType, RemoteInputPacketType, RemoteEditType, FeStateType, ContextMenuOpts, RendererContext, WindowSize, RendererModel, PtyDataType, BookmarkType, ClientDataType, PlaybookType, PlaybookEntryType, HistoryViewDataType, RenderModeType, AlertMessageType};