diff --git a/client/src/components/hints.tsx b/client/src/components/hints.tsx
index f9e1371..39c5513 100644
--- a/client/src/components/hints.tsx
+++ b/client/src/components/hints.tsx
@@ -32,7 +32,7 @@ export function DeletedHint({hint} : {hint: GameHint}) {
   </div>
 }
 
-export function DeletedHints({hints, showHidden} : {hints: GameHint[], showHidden: boolean}) {
+export function DeletedHints({hints} : {hints: GameHint[]}) {
 
   const openHints = hints.filter(hint => !hint.hidden)
   const hiddenHints = hints.filter(hint => hint.hidden)
@@ -40,6 +40,6 @@ export function DeletedHints({hints, showHidden} : {hints: GameHint[], showHidde
   // TODO: Should not use index as key.
   return <>
     {openHints.map((hint, i) => <DeletedHint key={`deleted-hint-${i}`} hint={hint} />)}
-    {showHidden && hiddenHints.map((hint, i) => <DeletedHint key={`deleted-hidden-hint-${i}`} hint={hint}/>)}
+    {hiddenHints.map((hint, i) => <DeletedHint key={`deleted-hidden-hint-${i}`} hint={hint}/>)}
   </>
 }
diff --git a/client/src/components/infoview/command_line.tsx b/client/src/components/infoview/command_line.tsx
index 3991e40..caaf0d3 100644
--- a/client/src/components/infoview/command_line.tsx
+++ b/client/src/components/infoview/command_line.tsx
@@ -19,7 +19,7 @@ import { DocumentPosition } from '../../../../node_modules/lean4-infoview/src/in
 import { useRpcSessionAtPos } from '../../../../node_modules/lean4-infoview/src/infoview/rpcSessions';
 import { DeletedChatContext, InputModeContext, MonacoEditorContext, ProofContext, ProofStep } from './context'
 import { goalsToString } from './goals'
-import { InteractiveGoals } from './rpc_api'
+import { GameHint, InteractiveGoals } from './rpc_api'
 
 /* We register a new language `leancmd` that looks like lean4, but does not use the lsp server. */
 
@@ -155,14 +155,14 @@ export function CommandLine({proofPanelRef}: {proofPanelRef: React.MutableRefObj
           }
           goalCount = goals.goals.length
 
+          // with no goals there will be no hints.
+          let hints : GameHint[] = goals.goals.length ? goals.goals[0].hints : []
+
           console.debug(`Command (${i}): `, i ? model.getLineContent(i) : '')
           console.debug(`Goals: (${i}): `, goalsToString(goals)) //
-          console.debug(`Hints: (${i}): `, goals.goals[0]?.hints)
+          console.debug(`Hints: (${i}): `, hints)
           console.debug(`Errors: (${i}): `, messages)
 
-          // with no goals there will be no hints
-          let hints = goals.goals.length ? goals.goals[0].hints : []
-
           tmpProof.push({
             // the command of the line above. Note that `getLineContent` starts counting
             // at `1` instead of `zero`. The first ProofStep will have an empty command.
diff --git a/client/src/components/infoview/context.ts b/client/src/components/infoview/context.ts
index dfc570a..4549e04 100644
--- a/client/src/components/infoview/context.ts
+++ b/client/src/components/infoview/context.ts
@@ -75,9 +75,13 @@ export const SelectionContext = React.createContext<{
 export const DeletedChatContext = React.createContext<{
   deletedChat : GameHint[],
   setDeletedChat: React.Dispatch<React.SetStateAction<Array<GameHint>>>
+  showHelp : Set<number>,
+  setShowHelp: React.Dispatch<React.SetStateAction<Set<number>>>
 }>({
   deletedChat: undefined,
-  setDeletedChat: () => {}
+  setDeletedChat: () => {},
+  showHelp: undefined,
+  setShowHelp: () => {}
 })
 
 export const InputModeContext = React.createContext<{
diff --git a/client/src/components/infoview/main.tsx b/client/src/components/infoview/main.tsx
index f83fa9c..433b7ed 100644
--- a/client/src/components/infoview/main.tsx
+++ b/client/src/components/infoview/main.tsx
@@ -276,7 +276,7 @@ export function CommandLineInterface(props: {world: string, level: number, data:
   const gameId = React.useContext(GameIdContext)
   const {proof} = React.useContext(ProofContext)
   const {selectedStep, setSelectedStep} = React.useContext(SelectionContext)
-  const {setDeletedChat} = React.useContext(DeletedChatContext)
+  const {setDeletedChat, showHelp} = React.useContext(DeletedChatContext)
 
   const proofPanelRef = React.useRef<HTMLDivElement>(null)
 
@@ -305,8 +305,9 @@ export function CommandLineInterface(props: {world: string, level: number, data:
   function deleteProof(line: number) {
     return (ev) => {
       let deletedChat: Array<GameHint> = []
-      proof.slice(line).map(step => {
-        deletedChat = [...deletedChat, ...step.hints]
+      proof.slice(line).map((step, i) => {
+        // Only add these hidden hints to the deletion stack which were visible
+        deletedChat = [...deletedChat, ...step.hints.filter(hint => (!hint.hidden || showHelp.has(line+i)))]
       })
       setDeletedChat(deletedChat)
 
diff --git a/client/src/components/level.tsx b/client/src/components/level.tsx
index 2a043ab..4aa15e8 100644
--- a/client/src/components/level.tsx
+++ b/client/src/components/level.tsx
@@ -72,6 +72,9 @@ function PlayableLevel({worldId, levelId}) {
   // a new proof has been entered. e.g. to consult messages coming from dead ends
   const [deletedChat, setDeletedChat] = useState<Array<GameHint>>([])
 
+  // A set of row numbers where help is displayed
+  const [showHelp, setShowHelp] = useState<Set<number>>(new Set())
+
   const initialCode = useAppSelector(selectCode(gameId, worldId, levelId))
   const initialSelections = useAppSelector(selectSelections(gameId, worldId, levelId))
 
@@ -98,7 +101,7 @@ function PlayableLevel({worldId, levelId}) {
     // TODO: For some reason this is always called twice
     console.debug('scroll chat')
     chatRef.current!.lastElementChild?.scrollIntoView() //scrollTo(0,0)
-  }, [proof, showHiddenHints])
+  }, [proof, showHelp])
 
   React.useEffect(() => {
     if (!commandLineMode) {
@@ -121,6 +124,11 @@ function PlayableLevel({worldId, levelId}) {
     }
   }, [selectedStep])
 
+  React.useEffect(() => {
+    // Forget whether hidden hints are displayed for steps that don't exist yet
+    setShowHelp(new Set(Array.from(showHelp).filter(i => (i < proof.length))))
+  }, [proof])
+
   /** Unused. Was implementing an undo button, which has been replaced by `deleteProof` inside
    * `CommandLineInterface`.
    */
@@ -221,7 +229,7 @@ function PlayableLevel({worldId, levelId}) {
 
   return <>
     <div style={level.isLoading ? null : {display: "none"}} className="app-content loading"><CircularProgress /></div>
-    <DeletedChatContext.Provider value={{deletedChat, setDeletedChat}}>
+    <DeletedChatContext.Provider value={{deletedChat, setDeletedChat, showHelp, setShowHelp}}>
     <SelectionContext.Provider value={{selectedStep, setSelectedStep}}>
     <InputModeContext.Provider value={{commandLineMode, setCommandLineMode, commandLineInput, setCommandLineInput}}>
     <ProofContext.Provider value={{proof, setProof}}>
@@ -240,11 +248,11 @@ function PlayableLevel({worldId, levelId}) {
               if (!(i == proof.length - 1 && hasInteractiveErrors(step.errors))) {
                 // TODO: Should not use index as key.
                 return <Hints key={`hints-${i}`}
-                  hints={step.hints} showHidden={showHiddenHints} step={i}
+                  hints={step.hints} showHidden={showHelp.has(i)} step={i}
                   selected={selectedStep} toggleSelection={toggleSelection(i)}/>
               }
             })}
-            <DeletedHints hints={deletedChat} showHidden={showHiddenHints}/>
+            <DeletedHints hints={deletedChat}/>
             {completed &&
               <>
                 <div className={`message information step-${k}${selectedStep == k ? ' selected' : ''}`} onClick={toggleSelection(k)}>
@@ -264,7 +272,21 @@ function PlayableLevel({worldId, levelId}) {
           </div>
           <div className="toggle-hidden-hints">
             <FormControlLabel
-              control={<Switch checked={showHiddenHints} onChange={() => setShowHiddenHints((prev) => !prev)} />}
+              control={<Switch checked={showHelp.has(proof.length - 1)} onChange={(ev) => {
+                console.debug(proof.length)
+                if (!(proof.length)) {return}
+
+                let k = proof.length - 1
+                // state must not be mutated, therefore we need to clone the set
+                let tmp = new Set(showHelp)
+                if (tmp.has(k)) {
+                  tmp.delete(k)
+                } else {
+                  tmp.add(k)
+                }
+                setShowHelp(tmp)
+                console.debug(`help: ${Array.from(tmp.values())}`)
+              }} />}
               label="Show more help!"
             />
           </div>
diff --git a/client/src/state/progress.ts b/client/src/state/progress.ts
index b82fd5b..476d3ca 100644
--- a/client/src/state/progress.ts
+++ b/client/src/state/progress.ts
@@ -14,7 +14,8 @@ interface Selection {
 interface LevelProgressState {
   code: string,
   selections: Selection[],
-  completed: boolean
+  completed: boolean,
+  help: number[], // A set of rows where hidden hints have been displayed
 }
 
 export interface GameProgressState {
@@ -29,7 +30,7 @@ interface ProgressState {
 const initialProgressState: ProgressState = loadState() ?? { games: {} }
 
 // TODO: There was some weird unreproducible bug with removing `as LevelProgressState` here...
-const initalLevelProgressState: LevelProgressState = {code: "", completed: false, selections: []}
+const initalLevelProgressState: LevelProgressState = {code: "", completed: false, selections: [], help: []}
 
 /** Add an empty skeleton with progress for the current level */
 function addLevelProgress(state: ProgressState, action: PayloadAction<{game: string, world: string, level: number}>) {
@@ -54,7 +55,7 @@ export const progressSlice = createSlice({
       state.games[action.payload.game][action.payload.world][action.payload.level].code = action.payload.code
       state.games[action.payload.game][action.payload.world][action.payload.level].completed = false
     },
-    /** TODO: ? */
+    /** TODO: docstring */
     changedSelection(state: ProgressState, action: PayloadAction<{game: string, world: string, level: number, selections: Selection[]}>) {
       addLevelProgress(state, action)
       state.games[action.payload.game][action.payload.world][action.payload.level].selections = action.payload.selections
@@ -64,6 +65,10 @@ export const progressSlice = createSlice({
       addLevelProgress(state, action)
       state.games[action.payload.game][action.payload.world][action.payload.level].completed = true
     },
+    /** Set the list of rows where help is displayed */
+    helpEdited(state: ProgressState, action: PayloadAction<{game: string, world: string, level: number, help: number[]}>) {
+      state.games[action.payload.game][action.payload.world][action.payload.level].help = action.payload.help
+    },
     /** delete all progress for this game */
     deleteProgress(state: ProgressState, action: PayloadAction<{game: string}>) {
       state.games[action.payload.game] = {}