diff --git a/client/src/components/chat.tsx b/client/src/components/chat.tsx
index e9b06d2..6acbfc6 100644
--- a/client/src/components/chat.tsx
+++ b/client/src/components/chat.tsx
@@ -12,10 +12,15 @@ import { Button, Markdown } from './utils'
 import { ChatContext, GameIdContext, PageContext, PreferencesContext, ProofContext } from '../state/context'
 import { GameHint, InteractiveGoalsWithHints } from './infoview/rpc_api'
 import { lastStepHasErrors } from './infoview/goals'
+import { AllMessages } from '../../../node_modules/@leanprover/infoview/dist/infoview/messages'
+import { LeanDiagnostic, RpcErrorCode, getInteractiveDiagnostics, InteractiveDiagnostic, TaggedText_stripTags } from '@leanprover/infoview-api'
+import { Location, DocumentUri, Diagnostic, DiagnosticSeverity, PublishDiagnosticsParams } from 'vscode-languageserver-protocol'
+import { InteractiveMessage } from '../../../node_modules/lean4-infoview/src/infoview/traceExplorer'
 
 import '../css/chat.css'
 import { faHome } from '@fortawesome/free-solid-svg-icons'
 
+
 /** Split a string by double newlines and filters out empty segments. */
 function splitIntro (intro : string) {
   return intro.split(/\n(\s*\n)+/).filter(t => t.trim())
@@ -164,11 +169,23 @@ function getHintText(hint: GameHint): string {
   }
 }
 
+/** Hint kinds. Note that number 1-4 are matching the numbers from `DiagnosticSeverity`
+ * from the vscode language server protocol.
+ */
+enum HintKind {
+  Error = 1,
+  Warning = 2,
+  Information = 3,
+  Hint = 4,
+  GameHint = 5,
+  Conclusion = 7,
+}
+
 /** Bundling a hint with the proof-step it comes from. */
 type GameHintWithStep = {
   hint: GameHint
+  kind: HintKind
   step?: number
-  conclusion?: boolean
 }
 
 /** Filter hints to not show consequtive identical hints twice.
@@ -186,8 +203,14 @@ export function filterHints(hints: GameHint[], prevHints: GameHint[]): GameHint[
   }
 }
 
+// TODO
+function helper(step, proof, kind, typewriterMode, selectedStep) {
+  return (step == proof?.steps?.length - (lastStepHasErrors(proof) ? 2 : 1) ? ' recent' : '') +
+  (!(kind == HintKind.Conclusion) && step >= (typewriterMode ? proof?.steps?.length : selectedStep+1) ? ' deleted-hint' : '')
+}
+
 /** A hint as it is displayed in the chat. */
-export function Hint({hint, step=null, conclusion=false} : GameHintWithStep) {
+export function Hint({hint, kind, step=null} : GameHintWithStep) {
   const { levelId } = useContext(GameIdContext)
   const { selectedStep, setSelectedStep } = useContext(ChatContext)
 
@@ -208,10 +231,9 @@ export function Hint({hint, step=null, conclusion=false} : GameHintWithStep) {
   // In typewriter, deleting parts of the proof stores the removed hints as `deletedChat`
   // until the next command is submitted; in editor, moving the cursor through the proof will
   // render all hints
-  return <div className={`message ${conclusion ? 'success' : hint.hidden ? 'warning' : 'information'} step-${step}` +
-      ((selectedStep !== null && step == selectedStep) ? ' selected' : '') +
-      (step == proof?.steps?.length - (lastStepHasErrors(proof) ? 2 : 1) ? ' recent' : '') +
-      (!conclusion && step >= (typewriterMode ? proof?.steps?.length : selectedStep+1) ? ' deleted-hint' : '') } onClick={toggleSelection}>
+  return <div className={`message kind-${kind} step-${step}` +
+      ((selectedStep !== null && step == selectedStep) ? ' selected' : '') + helper(step, proof, kind, typewriterMode, selectedStep)
+       } onClick={toggleSelection}>
     <Markdown>{getHintText(hint)}</Markdown>
   </div>
 }
@@ -221,9 +243,8 @@ export function Hint({hint, step=null, conclusion=false} : GameHintWithStep) {
  *
  * Set `conclusion` to true to trigger different style and disable selecting/deleting.
  */
-export function Hints({ hints, conclusion, counter=undefined } : {
+export function Hints({ hints, counter=undefined } : {
   hints: GameHintWithStep[],
-  conclusion?: boolean,
   counter?: number
 }) {
 
@@ -238,7 +259,7 @@ export function Hints({ hints, conclusion, counter=undefined } : {
   return <>
     { hints.slice(0, counter).map((hint, j) =>
       ((!hint.hint.hidden || showHelp.has(hint.step)) &&
-        <Hint key={`hint-${hint.step}-${j}`} hint={hint.hint} step={hint.step} conclusion={conclusion} />
+        <Hint key={`hint-${hint.step}-${j}`} hint={hint.hint} kind={hint.kind} step={hint.step} />
       )
     )}
     {/* { //showHelp.has(hint.step) &&
@@ -268,7 +289,6 @@ export function ChatPanel ({visible = true}) {
   const [counter, setCounter] = useState(1)
 
   const [introText, setIntroText] = useState<Array<GameHintWithStep>>([])
-  const [chatMessages, setChatMessages] = useState<Array<GameHintWithStep>>([])
   const { chatRef, deletedChat, showHelp, selectedStep } = useContext(ChatContext)
   const { proof } = useContext(ProofContext)
 
@@ -280,11 +300,9 @@ export function ChatPanel ({visible = true}) {
 
   // load and display the correct intro text
   useEffect(() => {
-    let messages: GameHintWithStep[] = []
-
     if (levelId > 0) {
       let introText = t(levelInfo.data?.introduction, {ns : gameId}).trim()
-      let introHint: GameHintWithStep = {hint: {text: introText, hidden: false, rawText: introText }, step: 0}
+      let introHint: GameHintWithStep = {hint: {text: introText, hidden: false, rawText: introText }, kind: HintKind.GameHint, step: 0}
 
       // playable level: show the level's intro
       if (levelInfo.data?.introduction) {
@@ -294,16 +312,10 @@ export function ChatPanel ({visible = true}) {
       else {
         setIntroText([])
       }
-
-      proof?.steps?.forEach((step, i) => {
-        console.log("tesr")
-        messages = messages.concat(filterHints(step.goals[0]?.hints, proof.steps[i-1]?.goals[0]?.hints).map(hint => ({hint: hint, step: i})))
-      })
-
     } else {
       if (worldId) {
         let introText = t(gameInfo.data?.worlds.nodes[worldId].introduction, {ns: gameId}).trim()
-        let introHints: GameHintWithStep[] = splitIntro(introText).map( txt => ({hint: {text: txt, hidden: false, rawText: txt }, step: 0}))
+        let introHints: GameHintWithStep[] = splitIntro(introText).map( txt => ({hint: {text: txt, hidden: false, rawText: txt }, kind: HintKind.GameHint, step: 0}))
 
         // Level 0: show the world's intro
         if (gameInfo.data?.worlds.nodes[worldId].introduction) {
@@ -314,7 +326,7 @@ export function ChatPanel ({visible = true}) {
         }
       } else {
         let introText = t(gameInfo.data?.introduction, {ns : gameId}).trim()
-        let introHints: GameHintWithStep[] = splitIntro(introText).map( txt => ({hint: {text: txt, hidden: false, rawText: txt }, step: 0}))
+        let introHints: GameHintWithStep[] = splitIntro(introText).map( txt => ({hint: {text: txt, hidden: false, rawText: txt }, kind: HintKind.GameHint, step: 0}))
 
         // world overview: show the game's intro
         if (gameInfo.data?.introduction) {
@@ -325,9 +337,6 @@ export function ChatPanel ({visible = true}) {
         }
       }
     }
-    console.log('chat messages:')
-    console.log(messages)
-    setChatMessages(messages)
   }, [gameInfo, levelInfo, gameId, worldId, levelId, proof])
 
   // Scroll the chat
@@ -355,7 +364,7 @@ export function ChatPanel ({visible = true}) {
       console.debug('scroll chat: down')
       chatRef.current!.lastElementChild?.scrollIntoView({block: "center"})
     }
-  }, [counter, introText, chatMessages, gameId, worldId, levelId])
+  }, [counter, introText, gameId, worldId, levelId])
 
   // Scroll down when new hidden hints are triggered
   useEffect(() => {
@@ -380,6 +389,19 @@ export function ChatPanel ({visible = true}) {
     }
   }, [selectedStep, gameId, worldId, levelId])
 
+  /** TODO: What's the magic here? Only needed if diags are displayed in chat. */
+  function diagToString (diag) {
+    // Hide "unsolved goals" messages
+    let message;
+    if ("append" in diag.message && "text" in diag.message.append[0] &&
+    diag.message?.append[0].text === "unsolved goals") {
+        message = diag.message.append[0]
+    } else {
+        message = diag.message
+    }
+    return message
+  }
+
   return <div className={`column chat-panel${visible ? '' : ' hidden'}`}>
     <div ref={chatRef} className="chat" >
       { gameInfo.error &&
@@ -388,17 +410,32 @@ export function ChatPanel ({visible = true}) {
         </div>
         }
       <Hints hints={introText} counter={readIntro ? undefined : counter}/>
-      <Hints hints={chatMessages}/>
+      {proof?.steps.map((step, i) => {
+        let x = [].concat(
+          filterHints(step.goals[0]?.hints, proof.steps[i-1]?.goals[0]?.hints).map(hint => ({hint: hint, kind: HintKind.GameHint, step: i})),
+          // // TODO: Uncomment this if you want to see the diags in chat
+          // step.diags.map(diag => ({hint: diagToString(diag), kind: diag.severity, step: i}))
+        )
+
+        return <>
+          <Hints hints={x}/>
+        </>
+      })}
+
+      {/* <Hints hints={chatMessages}/> */}
       {/* {proof?.steps.map((step, i) =>
         <Hints hints={step.goals[0]?.hints.map(hint => ({hint: hint, step: i}))}/>
       )} */}
       {/* <Hints hints={proof?.steps[proof?.steps?.length - 1]?.goals[0].hints.map(hint => ({hint: hint, step: proof?.steps?.length - 1}))} /> */}
 
       { deletedChat &&
-        <Hints hints={deletedChat.map(hint => ({hint: hint, step: proof?.steps?.length}))} />
+        <Hints hints={deletedChat.map(hint => ({hint: hint, kind: HintKind.GameHint, step: proof?.steps?.length}))} />
       }
       { completed && levelInfo.data?.conclusion &&
-        <Hints hints={[{hint: {text: t("Level completed! 🎉"), rawText: t("Level completed! 🎉"), hidden: false}, step: proof?.steps?.length}, {hint: {text: levelInfo.data?.conclusion, rawText: levelInfo.data?.conclusion, hidden: false}, step: proof?.steps?.length} ]} conclusion={true} />
+        <Hints hints={[
+          {hint: {text: t("Level completed! 🎉"), rawText: t("Level completed! 🎉"), hidden: false}, kind: HintKind.Conclusion, step: proof?.steps?.length},
+          {hint: {text: levelInfo.data?.conclusion, rawText: levelInfo.data?.conclusion, hidden: false}, kind: HintKind.GameHint, step: proof?.steps?.length}
+        ]} />
       }
 
       {/* {chatMessages.map(((t, i) =>
diff --git a/client/src/components/infoview/typewriter.tsx b/client/src/components/infoview/typewriter.tsx
index f83bd5f..211b8d3 100644
--- a/client/src/components/infoview/typewriter.tsx
+++ b/client/src/components/infoview/typewriter.tsx
@@ -93,19 +93,6 @@ export function Typewriter({disabled}: {disabled?: boolean}) {
 
   const inputRef = useRef()
 
-  // TODO: added for new typewriter. Clean up.
-  const [abbrRewriter, setAbbrRewriter] = useState<InputAbbreviationRewriter>()
-  const typewriterRef = useRef()
-  const typewriterContent = useRef('(new typewriter)')
-  const handleTypewriterChange = evt => {
-    typewriterContent.current = evt.target.value;
-    abbrRewriter?.resetAbbreviations()
-  };
-  const handleTypeWriterBlur = () => {
-    console.log(`handle typewriter blur. content: ${typewriterContent.current}`);
-  };
-
-
   // The context storing all information about the current proof
   const {proof, setProof, interimDiags, setInterimDiags, setCrashed} = React.useContext(ProofContext)
 
@@ -194,16 +181,6 @@ export function Typewriter({disabled}: {disabled?: boolean}) {
 
   // }, [uri]);
 
-  // Use unicode abbreviations in typewriter input
-  useEffect(() => {
-    const abbrRewriter = new InputAbbreviationRewriter({
-      abbreviationCharacter: "\\",
-      customTranslations: {},
-      eagerReplacementEnabled: false
-    }, typewriterRef.current!)
-    setAbbrRewriter(abbrRewriter)
-  }, [])
-
   useEffect(() => {
     const myEditor = monaco.editor.create(inputRef.current!, {
       value: typewriterInput,
@@ -291,14 +268,6 @@ export function Typewriter({disabled}: {disabled?: boolean}) {
         <div className="typewriter-input-wrapper">
           <div ref={inputRef} className="typewriter-input" />
         </div>
-
-        <ContentEditable
-          innerRef={typewriterRef}
-          id="unicode-input"
-          html={typewriterContent.current}
-          onBlur={handleTypeWriterBlur}
-          onChange={handleTypewriterChange} />
-        {/* <div ref={inputRef2} id="unicode-input" contentEditable="true"></div> */}
         <button type="submit" disabled={processing} className="btn btn-inverted">
           <FontAwesomeIcon icon={faWandMagicSparkles} />&nbsp;{t("Execute")}
         </button>
diff --git a/client/src/css/chat.css b/client/src/css/chat.css
index f071a68..1d370f4 100644
--- a/client/src/css/chat.css
+++ b/client/src/css/chat.css
@@ -55,18 +55,18 @@
   border-radius: 3px 3px 3px 3px;
 }
 
-.message.information, .message.info {
+.message.information, .message.info, .message.kind-5, .message.kind-3, .message.kind-4 {
   /* color: #059; */
   color: #000;
   background-color: #DDF6FF;
 }
 
-.message.warning {
+.message.warning, .message.kind-2 {
   color: #9F6000;
   background-color: #FEEFB3;
 }
 
-.message.error {
+.message.error, .message.kind-1 {
   color: #D8000C;
   background-color: #FFBABA;
 }
@@ -77,7 +77,7 @@
   box-shadow: .0em .0em .5em .2em #EEE;
  }
 
-.message.success {
+.message.success, , .message.kind-6 {
   color: #000;
   background-color: #E5FFDD;
 }
diff --git a/client/src/css/level.css b/client/src/css/level.css
index 133db44..09e7583 100644
--- a/client/src/css/level.css
+++ b/client/src/css/level.css
@@ -357,8 +357,9 @@ td code  {
   text-align: center;
 }
 
-#unicode-input {
+#unicode-input, .lean-abbrev-input {
   min-width: 0;
+  white-space: pre;
   flex: 1;
   /* padding: 0.4em .6em 0; */
   font-size: var(--vscode-editor-font-size);
diff --git a/package-lock.json b/package-lock.json
index 86ad7af..a66fa95 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "@fortawesome/free-regular-svg-icons": "^6.5.1",
         "@fortawesome/free-solid-svg-icons": "^6.5.1",
         "@fortawesome/react-fontawesome": "^0.2.0",
-        "@leanprover/infoview": "^0.4.3",
+        "@leanprover/infoview": "^0.7.1",
         "@leanprover/unicode-input-component": "^0.1.0",
         "@mui/icons-material": "^5.11.0",
         "@mui/material": "^5.11.1",
@@ -2170,231 +2170,6 @@
       "resolved": "https://registry.npmjs.org/@emotion/weak-memoize/-/weak-memoize-0.3.1.tgz",
       "integrity": "sha512-EsBwpc7hBUJWAsNPBmJy4hxWx12v6bshQsldrVmjxJoc3isbxhOrF2IcCpaXxfvq03NwkI7sbsOLXbYuqF/8Ww=="
     },
-    "node_modules/@esbuild/android-arm": {
-      "version": "0.18.20",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.18.20.tgz",
-      "integrity": "sha512-fyi7TDI/ijKKNZTUJAQqiG5T7YjJXgnzkURqmGj13C6dCqckZBLdl4h7bkhHt/t0WP+zO9/zwroDvANaOqO5Sw==",
-      "cpu": [
-        "arm"
-      ],
-      "optional": true,
-      "os": [
-        "android"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/android-arm64": {
-      "version": "0.18.20",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.18.20.tgz",
-      "integrity": "sha512-Nz4rJcchGDtENV0eMKUNa6L12zz2zBDXuhj/Vjh18zGqB44Bi7MBMSXjgunJgjRhCmKOjnPuZp4Mb6OKqtMHLQ==",
-      "cpu": [
-        "arm64"
-      ],
-      "optional": true,
-      "os": [
-        "android"
-      ],
-      "engines": {
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-      }
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-        "x64"
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@@ -15487,6 +15133,11 @@
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       "integrity": "sha512-e4hG1hRwoOdRb37cIMSgzNsxyzKfayW6VOflrwvR+/bzrkyxY/31WkbgnQpgtrNp1SdpJvpUAGTa/ZoiPNDuRQ=="
     },
+    "node_modules/tabbable": {
+      "version": "5.3.3",
+      "resolved": "https://registry.npmjs.org/tabbable/-/tabbable-5.3.3.tgz",
+      "integrity": "sha512-QD9qKY3StfbZqWOPLp0++pOrAVb/HbUi5xCc8cUo4XjP19808oaMiDzn0leBY5mCespIBM0CIZePzZjgzR83kA=="
+    },
     "node_modules/tachyons": {
       "version": "4.12.0",
       "resolved": "https://registry.npmjs.org/tachyons/-/tachyons-4.12.0.tgz",
diff --git a/package.json b/package.json
index 9b46287..cc5323a 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "@fortawesome/free-regular-svg-icons": "^6.5.1",
     "@fortawesome/free-solid-svg-icons": "^6.5.1",
     "@fortawesome/react-fontawesome": "^0.2.0",
-    "@leanprover/infoview": "^0.4.3",
+    "@leanprover/infoview": "^0.7.1",
     "@leanprover/unicode-input-component": "^0.1.0",
     "@mui/icons-material": "^5.11.0",
     "@mui/material": "^5.11.1",