diff --git a/README.md b/README.md
index 57688f2..85450df 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,7 @@ Ask the agent to elaborate on notes before finalizing choices.
 
 | Key                         | Context                                 | Effect                                      |
 |-----------------------------|-----------------------------------------|---------------------------------------------|
+| `?`                         | Ask flow / empty editor                 | Open key bindings modal                     |
 | `Tab` `Shift+Tab`           | Main flow                               | Switch tabs                                 |
 | `←` `→`                     | Main flow                               | Switch tabs                                 |
 | `↑` `↓`                     | Main flow                               | Move cursor                                 |
diff --git a/docs/contract.md b/docs/contract.md
index 78ae08a..48cd4d9 100644
--- a/docs/contract.md
+++ b/docs/contract.md
@@ -205,6 +205,7 @@ This document defines the stable external behavior. It does not explain internal
 
 Main flow:
 
+- `?`: open the key bindings modal
 - `Tab`, `Shift+Tab`, `Left`, `Right`: move between tabs
 - `Up`, `Down`: move between options
 - `Enter`: confirm or submit
@@ -220,6 +221,7 @@ Editing flow:
 - `Enter`: save and submit the current input
 - `Esc`: save draft and close the editor
 - `Ctrl+C`: dismiss the entire flow immediately without saving the current editor draft
+- `?`: open the key bindings modal when the editor is empty; otherwise enter `?` as text
 - when editor has text, arrow keys and `Tab` stay in the editor so the cursor can move while typing
 - when editor is empty, `Up`/`Down` move options and `Tab`/`Shift+Tab`/`Left`/`Right` move between tabs without requiring `Esc` first
 - navigation resumes only after closing the editor with `Esc`, unless the editor is empty and the navigation keys above are used
diff --git a/src/ask-tool-helpers.ts b/src/ask-tool-helpers.ts
index 92d397a..78dc0c1 100644
--- a/src/ask-tool-helpers.ts
+++ b/src/ask-tool-helpers.ts
@@ -1,5 +1,6 @@
 import type { ExtensionContext } from "@mariozechner/pi-coding-agent";
 import { Text, truncateToWidth } from "@mariozechner/pi-tui";
+import { UI_DIMENSIONS } from "./constants/ui.ts";
 import { renderResultText } from "./result.ts";
 import { createInitialState } from "./state/create.ts";
 import { collectValidationIssues } from "./state/normalize.ts";
@@ -10,7 +11,6 @@ import type {
 	AskResult,
 	AskValidationIssue,
 } from "./types.ts";
-import { UI_DIMENSIONS } from "./ui/constants.ts";
 
 export const ASK_TOOL_DESCRIPTION =
 	"Interactive clarification tool for cases where the next step depends on user preferences, missing requirements, or choosing between multiple valid directions. Ask a short structured interview, collect normalized answers, and continue using those answers explicitly instead of guessing. Supports single-select, multi-select, and preview-pane questions. Always include a machine-readable `value` for every option. Use `preview` only when every option includes `preview` text; descriptions alone are not enough.";
diff --git a/src/constants/keymaps.ts b/src/constants/keymaps.ts
new file mode 100644
index 0000000..c4768be
--- /dev/null
+++ b/src/constants/keymaps.ts
@@ -0,0 +1,247 @@
+import { Key, matchesKey } from "@mariozechner/pi-tui";
+
+const DIGIT_SHORTCUT_PATTERN = /^[1-9]$/;
+
+type KeyId = Parameters<typeof matchesKey>[1];
+type InputKey = KeyId | (string & {});
+
+export type AskKeyBindingKind = "command" | "affordance";
+
+export interface AskKeyBinding {
+	contexts: readonly string[];
+	description: string;
+	id: string;
+	keys: readonly InputKey[];
+	kind: AskKeyBindingKind;
+	label: string;
+}
+
+export type FooterKeymapContext =
+	| "default"
+	| "multi"
+	| "submit"
+	| "input"
+	| "note";
+
+export const ASK_KEY_BINDINGS = {
+	help: {
+		id: "help",
+		keys: ["?"],
+		kind: "command",
+		label: "?",
+		description: "Show this menu",
+		contexts: ["Main flow"],
+	},
+	cancel: {
+		id: "cancel",
+		keys: [Key.escape],
+		kind: "command",
+		label: "Esc",
+		description: "Cancel flow or close/save editor draft",
+		contexts: ["Main flow", "Editors"],
+	},
+	dismiss: {
+		id: "dismiss",
+		keys: [Key.ctrl("c")],
+		kind: "command",
+		label: "Ctrl+C",
+		description: "Dismiss entire ask flow immediately",
+		contexts: ["Anywhere"],
+	},
+	nextTab: {
+		id: "nextTab",
+		keys: [Key.tab, Key.right],
+		kind: "command",
+		label: "Tab / →",
+		description: "Switch to next tab",
+		contexts: ["Main flow", "Empty editor"],
+	},
+	previousTab: {
+		id: "previousTab",
+		keys: [Key.shift("tab"), Key.left],
+		kind: "command",
+		label: "Shift+Tab / ←",
+		description: "Switch to previous tab",
+		contexts: ["Main flow", "Empty editor"],
+	},
+	previousOption: {
+		id: "previousOption",
+		keys: [Key.up],
+		kind: "command",
+		label: "↑ / ↓",
+		description: "Move between options/actions",
+		contexts: ["Main flow", "Empty editor"],
+	},
+	nextOption: {
+		id: "nextOption",
+		keys: [Key.down],
+		kind: "command",
+		label: "↓",
+		description: "Move to next option/action",
+		contexts: ["Main flow", "Empty editor"],
+	},
+	numberShortcut: {
+		id: "numberShortcut",
+		keys: ["1..9"],
+		kind: "command",
+		label: "1..9",
+		description: "Quick-select option or submit action",
+		contexts: ["Main flow", "Submit tab"],
+	},
+	toggle: {
+		id: "toggle",
+		keys: [Key.space],
+		kind: "command",
+		label: "Space",
+		description: "Toggle selected option",
+		contexts: ["Multi-select questions"],
+	},
+	confirm: {
+		id: "confirm",
+		keys: [Key.enter],
+		kind: "command",
+		label: "Enter",
+		description: "Confirm selection, continue, save, or submit",
+		contexts: ["Main flow", "Editors"],
+	},
+	optionNote: {
+		id: "optionNote",
+		keys: ["n"],
+		kind: "command",
+		label: "N",
+		description: "Edit selected option note",
+		contexts: ["Question tabs"],
+	},
+	questionNote: {
+		id: "questionNote",
+		keys: ["N"],
+		kind: "command",
+		label: "Shift+N",
+		description: "Edit question note",
+		contexts: ["Question tabs"],
+	},
+	fileReference: {
+		id: "fileReference",
+		keys: ["@"],
+		kind: "affordance",
+		label: "@",
+		description: "Reference files while typing answers or notes",
+		contexts: ["Editors"],
+	},
+} as const satisfies Record<string, AskKeyBinding>;
+
+export const ASK_KEYMAPS: readonly AskKeyBinding[] = [
+	ASK_KEY_BINDINGS.help,
+	ASK_KEY_BINDINGS.cancel,
+	ASK_KEY_BINDINGS.dismiss,
+	ASK_KEY_BINDINGS.nextTab,
+	ASK_KEY_BINDINGS.previousTab,
+	ASK_KEY_BINDINGS.previousOption,
+	ASK_KEY_BINDINGS.numberShortcut,
+	ASK_KEY_BINDINGS.toggle,
+	ASK_KEY_BINDINGS.confirm,
+	ASK_KEY_BINDINGS.optionNote,
+	ASK_KEY_BINDINGS.questionNote,
+	ASK_KEY_BINDINGS.fileReference,
+] as const;
+
+const footerHint = (
+	binding: AskKeyBinding,
+	action: string,
+	label = binding.label
+): string => `${label} ${action}`;
+const optionNavigationLabel = ASK_KEY_BINDINGS.previousOption.label.replaceAll(
+	" / ",
+	""
+);
+const tabNavigationLabel = "⇆";
+const noteNavigationLabel = `${ASK_KEY_BINDINGS.optionNote.label}/${ASK_KEY_BINDINGS.questionNote.label}`;
+
+export const ASK_FOOTER_HINTS_BY_CONTEXT: Record<
+	FooterKeymapContext,
+	readonly string[]
+> = {
+	input: [
+		footerHint(ASK_KEY_BINDINGS.confirm, "submit"),
+		footerHint(ASK_KEY_BINDINGS.cancel, "close"),
+		footerHint(ASK_KEY_BINDINGS.help, "help"),
+	],
+	note: [
+		footerHint(ASK_KEY_BINDINGS.confirm, "save"),
+		footerHint(ASK_KEY_BINDINGS.cancel, "close"),
+		footerHint(ASK_KEY_BINDINGS.help, "help"),
+	],
+	submit: [
+		footerHint(ASK_KEY_BINDINGS.numberShortcut, "hotkeys"),
+		footerHint(
+			ASK_KEY_BINDINGS.previousOption,
+			"select",
+			optionNavigationLabel
+		),
+		footerHint(ASK_KEY_BINDINGS.confirm, "confirm"),
+		footerHint(ASK_KEY_BINDINGS.cancel, "cancel"),
+		footerHint(ASK_KEY_BINDINGS.help, "help"),
+	],
+	multi: [
+		footerHint(ASK_KEY_BINDINGS.nextTab, "tab", tabNavigationLabel),
+		footerHint(
+			ASK_KEY_BINDINGS.previousOption,
+			"select",
+			optionNavigationLabel
+		),
+		footerHint(ASK_KEY_BINDINGS.toggle, "toggle"),
+		footerHint(ASK_KEY_BINDINGS.confirm, "continue"),
+		footerHint(ASK_KEY_BINDINGS.optionNote, "note", noteNavigationLabel),
+		footerHint(ASK_KEY_BINDINGS.cancel, "dismiss"),
+		footerHint(ASK_KEY_BINDINGS.help, "help"),
+	],
+	default: [
+		footerHint(ASK_KEY_BINDINGS.nextTab, "tab", tabNavigationLabel),
+		footerHint(
+			ASK_KEY_BINDINGS.previousOption,
+			"select",
+			optionNavigationLabel
+		),
+		footerHint(ASK_KEY_BINDINGS.confirm, "confirm"),
+		footerHint(ASK_KEY_BINDINGS.optionNote, "note", noteNavigationLabel),
+		footerHint(ASK_KEY_BINDINGS.cancel, "dismiss"),
+		footerHint(ASK_KEY_BINDINGS.help, "help"),
+	],
+} as const;
+
+export const ASK_HELP_CLOSE_BINDINGS = [
+	ASK_KEY_BINDINGS.cancel,
+	ASK_KEY_BINDINGS.dismiss,
+	ASK_KEY_BINDINGS.help,
+] as const;
+
+export const ASK_HELP_CLOSE_HINT = `Press ${ASK_HELP_CLOSE_BINDINGS.map(
+	(binding) => binding.label
+)
+	.map((label, index, labels) => {
+		if (index === 0) {
+			return label;
+		}
+		if (index === labels.length - 1) {
+			return `or ${label}`;
+		}
+		return label;
+	})
+	.join(", ")} to close.`;
+
+export function renderFooterKeymaps(context: FooterKeymapContext): string {
+	return ` ${ASK_FOOTER_HINTS_BY_CONTEXT[context].join(" · ")}`;
+}
+
+export function matchesBinding(data: string, binding: AskKeyBinding): boolean {
+	return binding.keys.some((key) => {
+		if (key.length === 1) {
+			return data === key;
+		}
+		return matchesKey(data, key as KeyId);
+	});
+}
+
+export function matchesDigitShortcut(data: string): number | null {
+	return DIGIT_SHORTCUT_PATTERN.test(data) ? Number(data) : null;
+}
diff --git a/src/constants.ts b/src/constants/text.ts
similarity index 100%
rename from src/constants.ts
rename to src/constants/text.ts
diff --git a/src/ui/constants.ts b/src/constants/ui.ts
similarity index 59%
rename from src/ui/constants.ts
rename to src/constants/ui.ts
index d209b72..177470c 100644
--- a/src/ui/constants.ts
+++ b/src/constants/ui.ts
@@ -17,13 +17,6 @@ export const UI_TEXT = {
 	questionNoteTitle: "Note:",
 	reviewTitle: "Review answers",
 	unanswered: "→ unanswered",
-	footerInput: " Enter submit · Esc close",
-	footerNote: " Enter save · Esc close",
-	footerSubmit: " 1..3 hotkeys · ↑↓ select · Enter confirm · Esc cancel",
-	footerMulti:
-		" ⇆ tab · ↑↓ select · Space toggle · Enter continue · N/Shift+N note · Esc dismiss",
-	footerDefault:
-		" ⇆ tab · ↑↓ select · Enter confirm · N/Shift+N note · Esc dismiss",
 	editorPlaceholderInput: "Type answer...",
 	editorPlaceholderNote: "Add a note...",
 } as const;
diff --git a/src/result-format.ts b/src/result-format.ts
index de454e4..d60960e 100644
--- a/src/result-format.ts
+++ b/src/result-format.ts
@@ -1,4 +1,4 @@
-import { ELABORATED_SUMMARY } from "./constants.ts";
+import { ELABORATED_SUMMARY } from "./constants/text.ts";
 import { isCustomOnlyAnswer } from "./state/answers.ts";
 import type { AskResult } from "./types.ts";
 
diff --git a/src/result.ts b/src/result.ts
index 494121a..b0e3418 100644
--- a/src/result.ts
+++ b/src/result.ts
@@ -2,7 +2,7 @@ import {
 	CANCELLED_RESULT_TEXT,
 	ELABORATED_RESULT_TEXT,
 	SUBMITTED_RESULT_TEXT,
-} from "./constants.ts";
+} from "./constants/text.ts";
 import { formatElaborationLines, formatResultLines } from "./result-format.ts";
 import type { AskResult } from "./types.ts";
 
diff --git a/src/state/result.ts b/src/state/result.ts
index 79d99df..0ab9398 100644
--- a/src/state/result.ts
+++ b/src/state/result.ts
@@ -3,7 +3,7 @@ import {
 	ELABORATED_SUMMARY,
 	ELABORATION_INSTRUCTION,
 	SUBMITTED_SUMMARY,
-} from "../constants.ts";
+} from "../constants/text.ts";
 import { formatElaborationLines, formatResultLines } from "../result-format.ts";
 import type {
 	AskContinuationPayload,
diff --git a/src/state/selectors.ts b/src/state/selectors.ts
index 71ff34e..6897290 100644
--- a/src/state/selectors.ts
+++ b/src/state/selectors.ts
@@ -1,4 +1,4 @@
-import { OTHER_OPTION_LABEL, OTHER_OPTION_VALUE } from "../constants.ts";
+import { OTHER_OPTION_LABEL, OTHER_OPTION_VALUE } from "../constants/text.ts";
 import type {
 	AskDisplayOption,
 	AskQuestion,
diff --git a/src/ui/controller.ts b/src/ui/controller.ts
index 4407555..54b0535 100644
--- a/src/ui/controller.ts
+++ b/src/ui/controller.ts
@@ -27,6 +27,7 @@ import {
 import { isEditingView } from "../state/view.ts";
 import type { AskParams, AskResult, AskState } from "../types.ts";
 import { createAskAutocompleteProvider } from "./autocomplete.ts";
+import { AskHelpModal } from "./help-modal.ts";
 import type { AskInputCommand } from "./input.ts";
 import { getInputCommand } from "./input.ts";
 import { renderAskScreen } from "./render.ts";
@@ -39,11 +40,14 @@ type Tui = CustomCallbackArgs[0];
 type Theme = CustomCallbackArgs[1];
 type Keybindings = CustomCallbackArgs[2];
 type Done = (result: AskResult) => void;
-type AskFlowParams = AskParams & Pick<ExtensionContext, "cwd">;
+type AskFlowParams = AskParams &
+	Pick<ExtensionContext, "cwd"> & { ctx: ExtensionContext };
 
 interface AskFlowController {
+	ctx: ExtensionContext;
 	done: Done;
 	editor: Editor;
+	helpOpen: boolean;
 	state: AskState;
 	suppressAutoInputForSelection: boolean;
 	theme: Theme;
@@ -55,7 +59,7 @@ export function runAskFlow(
 	params: AskParams
 ): Promise<AskResult> {
 	return ctx.ui.custom<AskResult>((...args) =>
-		createAskFlowController(args, { ...params, cwd: ctx.cwd })
+		createAskFlowController(args, { ...params, cwd: ctx.cwd, ctx })
 	);
 }
 
@@ -69,8 +73,10 @@ function createAskFlowController(
 	params: AskFlowParams
 ) {
 	const controller: AskFlowController = {
+		ctx: params.ctx,
 		done,
 		editor: createEditor(tui, theme, params.cwd),
+		helpOpen: false,
 		state: createInitialState(params),
 		suppressAutoInputForSelection: false,
 		theme,
@@ -125,6 +131,10 @@ function handleEditingCommand(
 		commitState(controller, dismissFlow(controller.state), { finish: true });
 		return;
 	}
+	if (command.kind === "showHelp") {
+		showHelpModal(controller);
+		return;
+	}
 	if (command.kind === "editMoveTab") {
 		commitSavedEditorNavigation(controller, moveTab, command.delta);
 		return;
@@ -180,6 +190,9 @@ function handleNavigationCommand(
 		case "dismiss":
 			commitState(controller, dismissFlow(controller.state), { finish: true });
 			return;
+		case "showHelp":
+			showHelpModal(controller);
+			return;
 		case "ignore":
 		case "editMoveTab":
 		case "editMoveOption":
@@ -270,6 +283,34 @@ function closeEditor(controller: AskFlowController) {
 	refresh(controller);
 }
 
+function showHelpModal(controller: AskFlowController) {
+	if (controller.helpOpen) {
+		return;
+	}
+	controller.helpOpen = true;
+	controller.ctx.ui
+		.custom<void>(
+			(_tui, _theme, _keybindings, done) =>
+				new AskHelpModal(controller.theme, () => {
+					done();
+				}),
+			{
+				overlay: true,
+				overlayOptions: {
+					anchor: "center",
+					margin: 1,
+					maxHeight: "90%",
+					minWidth: 26,
+					width: 72,
+				},
+			}
+		)
+		.finally(() => {
+			controller.helpOpen = false;
+			refresh(controller);
+		});
+}
+
 function refresh(controller: AskFlowController) {
 	controller.tui.requestRender();
 }
diff --git a/src/ui/help-modal.ts b/src/ui/help-modal.ts
new file mode 100644
index 0000000..dcb2571
--- /dev/null
+++ b/src/ui/help-modal.ts
@@ -0,0 +1,101 @@
+import { truncateToWidth, visibleWidth } from "@mariozechner/pi-tui";
+import {
+	ASK_HELP_CLOSE_BINDINGS,
+	ASK_HELP_CLOSE_HINT,
+	ASK_KEYMAPS,
+	matchesBinding,
+} from "../constants/keymaps.ts";
+import { wrapText } from "../text.ts";
+
+interface Theme {
+	bg(color: string, text: string): string;
+	fg(color: string, text: string): string;
+}
+
+const MIN_WIDTH = 24;
+const COMPACT_WIDTH = 46;
+
+function padToWidth(text: string, width: number): string {
+	return text + " ".repeat(Math.max(0, width - visibleWidth(text)));
+}
+
+export class AskHelpModal {
+	private closed = false;
+	private readonly onClose: () => void;
+	private readonly theme: Theme;
+
+	constructor(theme: Theme, onClose: () => void) {
+		this.theme = theme;
+		this.onClose = onClose;
+	}
+
+	handleInput(data: string): void {
+		if (
+			ASK_HELP_CLOSE_BINDINGS.some((binding) => matchesBinding(data, binding))
+		) {
+			this.close();
+		}
+	}
+
+	render(width: number): string[] {
+		const innerW = Math.max(MIN_WIDTH, width - 2);
+		const compact = innerW < COMPACT_WIDTH;
+		const keyW = compact ? 11 : 16;
+		const descW = Math.max(8, innerW - keyW - 5);
+		const border = (text: string) => this.theme.fg("border", text);
+		const title = this.theme.fg("accent", " @eko24ive/pi-ask ");
+		const titleW = visibleWidth(title);
+		const titlePad = Math.max(0, innerW - titleW);
+		const left = Math.floor(titlePad / 2);
+		const right = titlePad - left;
+		const line = (content = "") =>
+			`${border("│")}${padToWidth(` ${content}`, innerW)}${border("│")}`;
+
+		const lines = [
+			`${border(`╭${"─".repeat(left)}`)}${title}${border(`${"─".repeat(right)}╮`)}`,
+			`${border(`├${"─".repeat(innerW)}┤`)}`,
+		];
+
+		for (const hint of ASK_KEYMAPS) {
+			if (compact) {
+				lines.push(line(this.theme.fg("accent", hint.label)));
+				for (const descLine of wrapText(hint.description, innerW - 3)) {
+					lines.push(line(`  ${this.theme.fg("text", descLine)}`));
+				}
+				continue;
+			}
+
+			const keyText = padToWidth(truncateToWidth(hint.label, keyW, "…"), keyW);
+			const key = this.theme.fg("accent", keyText);
+			const desc = truncateToWidth(hint.description, descW, "…");
+			lines.push(line(`${key} ${desc}`));
+			const contexts = hint.contexts.join(", ");
+			lines.push(
+				line(`${" ".repeat(keyW)}  ${this.theme.fg("dim", contexts)}`)
+			);
+		}
+
+		lines.push(`${border(`├${"─".repeat(innerW)}┤`)}`);
+		for (const hintLine of wrapText(ASK_HELP_CLOSE_HINT, innerW - 2)) {
+			lines.push(line(this.theme.fg("muted", hintLine)));
+		}
+		lines.push(`${border(`╰${"─".repeat(innerW)}╯`)}`);
+		return lines;
+	}
+
+	invalidate(): void {
+		// Static modal; no async invalidation needed.
+	}
+
+	dispose(): void {
+		this.close();
+	}
+
+	private close(): void {
+		if (this.closed) {
+			return;
+		}
+		this.closed = true;
+		this.onClose();
+	}
+}
diff --git a/src/ui/input.ts b/src/ui/input.ts
index e673b2d..3e36f4a 100644
--- a/src/ui/input.ts
+++ b/src/ui/input.ts
@@ -1,8 +1,10 @@
-import { Key, matchesKey } from "@mariozechner/pi-tui";
+import {
+	ASK_KEY_BINDINGS,
+	matchesBinding,
+	matchesDigitShortcut,
+} from "../constants/keymaps.ts";
 import type { AskState } from "../types.ts";
 
-const DIGIT_PATTERN = /^[1-9]$/;
-
 export type AskInputCommand =
 	| { kind: "moveTab"; delta: 1 | -1 }
 	| { kind: "moveOption"; delta: 1 | -1 }
@@ -12,6 +14,7 @@ export type AskInputCommand =
 	| { kind: "confirm" }
 	| { kind: "cancel" }
 	| { kind: "dismiss" }
+	| { kind: "showHelp" }
 	| { kind: "numberShortcut"; digit: number }
 	| { kind: "editMoveTab"; delta: 1 | -1 }
 	| { kind: "editMoveOption"; delta: 1 | -1 }
@@ -24,9 +27,12 @@ export function getInputCommand(
 	data: string,
 	editingText = ""
 ): AskInputCommand {
-	if (matchesKey(data, Key.ctrl("c"))) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.dismiss)) {
 		return { kind: "dismiss" };
 	}
+	if (matchesBinding(data, ASK_KEY_BINDINGS.help) && editingText.length === 0) {
+		return { kind: "showHelp" };
+	}
 
 	if (state.view.kind === "input" || state.view.kind === "note") {
 		return getEditingInputCommand(data, editingText);
@@ -51,20 +57,20 @@ function getEditingInputCommand(
 	data: string,
 	editingText: string
 ): AskInputCommand {
-	if (matchesKey(data, Key.escape)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.cancel)) {
 		return { kind: "editClose" };
 	}
 	if (editingText.length === 0) {
-		if (matchesKey(data, Key.tab) || matchesKey(data, Key.right)) {
+		if (matchesBinding(data, ASK_KEY_BINDINGS.nextTab)) {
 			return { kind: "editMoveTab", delta: 1 };
 		}
-		if (matchesKey(data, Key.shift("tab")) || matchesKey(data, Key.left)) {
+		if (matchesBinding(data, ASK_KEY_BINDINGS.previousTab)) {
 			return { kind: "editMoveTab", delta: -1 };
 		}
-		if (matchesKey(data, Key.up)) {
+		if (matchesBinding(data, ASK_KEY_BINDINGS.previousOption)) {
 			return { kind: "editMoveOption", delta: -1 };
 		}
-		if (matchesKey(data, Key.down)) {
+		if (matchesBinding(data, ASK_KEY_BINDINGS.nextOption)) {
 			return { kind: "editMoveOption", delta: 1 };
 		}
 	}
@@ -72,48 +78,36 @@ function getEditingInputCommand(
 }
 
 function getNavigationInputCommand(data: string): AskInputCommand {
-	if (matchesKey(data, Key.tab) || matchesKey(data, Key.right)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.nextTab)) {
 		return { kind: "moveTab", delta: 1 };
 	}
-	if (matchesKey(data, Key.shift("tab")) || matchesKey(data, Key.left)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.previousTab)) {
 		return { kind: "moveTab", delta: -1 };
 	}
-	if (matchesKey(data, Key.up)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.previousOption)) {
 		return { kind: "moveOption", delta: -1 };
 	}
-	if (matchesKey(data, Key.down)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.nextOption)) {
 		return { kind: "moveOption", delta: 1 };
 	}
-	if (matchesKey(data, Key.space)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.toggle)) {
 		return { kind: "toggleMulti" };
 	}
-	if (matchesKey(data, Key.enter)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.confirm)) {
 		return { kind: "confirm" };
 	}
-	if (matchesKey(data, Key.escape)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.cancel)) {
 		return { kind: "cancel" };
 	}
-	if (isQuestionNoteShortcut(data)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.questionNote)) {
 		return { kind: "openQuestionNote" };
 	}
-	if (isOptionNoteShortcut(data)) {
+	if (matchesBinding(data, ASK_KEY_BINDINGS.optionNote)) {
 		return { kind: "openOptionNote" };
 	}
 
-	const digit = parseDigit(data);
+	const digit = matchesDigitShortcut(data);
 	return digit === null
 		? { kind: "ignore" }
 		: { kind: "numberShortcut", digit };
 }
-
-function isOptionNoteShortcut(data: string): boolean {
-	return data === "n";
-}
-
-function isQuestionNoteShortcut(data: string): boolean {
-	return data === "N";
-}
-
-function parseDigit(data: string): number | null {
-	return DIGIT_PATTERN.test(data) ? Number(data) : null;
-}
diff --git a/src/ui/render-helpers.ts b/src/ui/render-helpers.ts
index 19c2394..a484094 100644
--- a/src/ui/render-helpers.ts
+++ b/src/ui/render-helpers.ts
@@ -1,9 +1,13 @@
 import type { ExtensionContext } from "@mariozechner/pi-coding-agent";
 import { truncateToWidth, visibleWidth } from "@mariozechner/pi-tui";
-import { NO_PREVIEW_TEXT } from "../constants.ts";
+import {
+	type FooterKeymapContext,
+	renderFooterKeymaps,
+} from "../constants/keymaps.ts";
+import { NO_PREVIEW_TEXT } from "../constants/text.ts";
+import { UI_DIMENSIONS, UI_TEXT } from "../constants/ui.ts";
 import { clamp } from "../math.ts";
 import { wrapText } from "../text.ts";
-import { UI_DIMENSIONS, UI_TEXT } from "./constants.ts";
 
 type Theme = ExtensionContext["ui"]["theme"];
 type ThemeColor =
@@ -368,21 +372,8 @@ export function pushSavedNote(args: {
 	);
 }
 
-export function renderFooterText(
-	mode: "input" | "note" | "submit" | "multi" | "default"
-) {
-	switch (mode) {
-		case "input":
-			return UI_TEXT.footerInput;
-		case "note":
-			return UI_TEXT.footerNote;
-		case "submit":
-			return UI_TEXT.footerSubmit;
-		case "multi":
-			return UI_TEXT.footerMulti;
-		default:
-			return UI_TEXT.footerDefault;
-	}
+export function renderFooterText(mode: FooterKeymapContext): string {
+	return renderFooterKeymaps(mode);
 }
 
 function padToVisibleWidth(text: string, width: number): string {
diff --git a/src/ui/render-question.ts b/src/ui/render-question.ts
index fef880c..baeac17 100644
--- a/src/ui/render-question.ts
+++ b/src/ui/render-question.ts
@@ -1,5 +1,5 @@
 import { truncateToWidth, visibleWidth } from "@mariozechner/pi-tui";
-import { UI_DIMENSIONS } from "./constants.ts";
+import { UI_DIMENSIONS } from "../constants/ui.ts";
 import {
 	measurePreviewLeftWidth,
 	mergeColumns,
diff --git a/src/ui/render-submit.ts b/src/ui/render-submit.ts
index f33ab7f..ca04289 100644
--- a/src/ui/render-submit.ts
+++ b/src/ui/render-submit.ts
@@ -1,6 +1,6 @@
 import { truncateToWidth } from "@mariozechner/pi-tui";
+import { UI_TEXT } from "../constants/ui.ts";
 import type { AskState } from "../types.ts";
-import { UI_TEXT } from "./constants.ts";
 import {
 	mergeColumns,
 	pushSavedNote,
diff --git a/src/ui/view-models/question.ts b/src/ui/view-models/question.ts
index f25916b..490beb4 100644
--- a/src/ui/view-models/question.ts
+++ b/src/ui/view-models/question.ts
@@ -1,3 +1,4 @@
+import { UI_DIMENSIONS, UI_TEXT } from "../../constants/ui.ts";
 import { isOptionSelected } from "../../state/answers.ts";
 import {
 	getAnswer,
@@ -8,7 +9,6 @@ import {
 	isQuestionNoteOpen,
 } from "../../state/selectors.ts";
 import type { AskDisplayOption } from "../../types.ts";
-import { UI_DIMENSIONS, UI_TEXT } from "../constants.ts";
 import type { QuestionRenderContext } from "../render-types.ts";
 
 export type QuestionNoteModel =
diff --git a/src/ui/view-models/review.ts b/src/ui/view-models/review.ts
index 49e65d7..6e552f1 100644
--- a/src/ui/view-models/review.ts
+++ b/src/ui/view-models/review.ts
@@ -1,5 +1,6 @@
 import { visibleWidth } from "@mariozechner/pi-tui";
-import { SUBMIT_CHOICES } from "../../constants.ts";
+import { SUBMIT_CHOICES } from "../../constants/text.ts";
+import { UI_DIMENSIONS } from "../../constants/ui.ts";
 import { isCustomOnlyAnswer } from "../../state/answers.ts";
 import {
 	type ReviewAnswer,
@@ -7,7 +8,6 @@ import {
 	toReviewAnswer,
 } from "../../state/result.ts";
 import type { AskState } from "../../types.ts";
-import { UI_DIMENSIONS } from "../constants.ts";
 
 export interface ReviewSelectionModel {
 	label: string;
diff --git a/tests/help-modal.test.ts b/tests/help-modal.test.ts
new file mode 100644
index 0000000..4207b64
--- /dev/null
+++ b/tests/help-modal.test.ts
@@ -0,0 +1,68 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { visibleWidth } from "@mariozechner/pi-tui";
+import { ASK_HELP_CLOSE_HINT, ASK_KEYMAPS } from "../src/constants/keymaps.ts";
+import { AskHelpModal } from "../src/ui/help-modal.ts";
+
+const noop = () => {
+	// Test callback intentionally does nothing.
+};
+
+function plainTheme() {
+	return {
+		fg(_color: string, text: string) {
+			return text;
+		},
+		bg(_color: string, text: string) {
+			return text;
+		},
+	};
+}
+
+test("help modal renders compactly on phone-width screens", () => {
+	const modal = new AskHelpModal(plainTheme(), noop);
+	const lines = modal.render(28);
+
+	assert(lines.length > ASK_KEYMAPS.length + 4);
+	assert(lines.every((line) => visibleWidth(line) <= 28));
+	assert(lines.join("\n").includes("@eko24ive/pi-ask"));
+	assert(lines.slice(-3, -1).join(" ").includes("Esc, Ctrl+C, or ?"));
+	assert(lines.includes("│ ?                        │"));
+	assert(lines.includes("│   Show this menu         │"));
+});
+
+test("help modal keeps context rows on wider screens", () => {
+	const modal = new AskHelpModal(plainTheme(), noop);
+	const lines = modal.render(72);
+
+	assert(lines.length > ASK_KEYMAPS.length + 4);
+	assert(lines.join("\n").includes("Main flow"));
+	assert(lines.at(-2)?.includes(ASK_HELP_CLOSE_HINT));
+});
+
+test("help modal closes from configured keyboard shortcuts", () => {
+	for (const input of ["?", "\u001b", "\u0003"]) {
+		let closed = 0;
+		const modal = new AskHelpModal(plainTheme(), () => {
+			closed += 1;
+		});
+
+		modal.handleInput(input);
+
+		assert.equal(closed, 1);
+	}
+});
+
+test("help modal ignores enter and closes idempotently on dispose", () => {
+	let closed = 0;
+	const modal = new AskHelpModal(plainTheme(), () => {
+		closed += 1;
+	});
+
+	modal.handleInput("\r");
+	assert.equal(closed, 0);
+
+	modal.dispose();
+	modal.dispose();
+	assert.equal(closed, 1);
+});
diff --git a/tests/input.test.ts b/tests/input.test.ts
index ea6a00f..5bf9f43 100644
--- a/tests/input.test.ts
+++ b/tests/input.test.ts
@@ -164,6 +164,25 @@ test("ctrl+c dismisses the flow from both navigation and editing modes", () => {
 	});
 });
 
+test("question mark opens keymap help outside non-empty editors", () => {
+	const navigation = createInitialState({
+		questions: [
+			{
+				id: "q1",
+				prompt: "Question?",
+				options: [{ value: "a", label: "A" }],
+			},
+		],
+	});
+	const input = inputState();
+
+	assert.deepEqual(getInputCommand(navigation, "?"), { kind: "showHelp" });
+	assert.deepEqual(getInputCommand(input, "?", ""), { kind: "showHelp" });
+	assert.deepEqual(getInputCommand(input, "?", "x"), {
+		kind: "delegateToEditor",
+	});
+});
+
 test("note shortcuts use n for option notes and Shift+N for question notes", () => {
 	const navigation = createInitialState({
 		questions: [
diff --git a/tests/render-frame.test.ts b/tests/render-frame.test.ts
index c41b374..8a3f7cb 100644
--- a/tests/render-frame.test.ts
+++ b/tests/render-frame.test.ts
@@ -223,7 +223,7 @@ test("footer hints wrap into exact lines on narrow screens", () => {
 		"Space toggle",
 		"Enter continue",
 		"N/Shift+N note",
-		"Esc dismiss",
+		"Esc dismiss · ? help",
 	]);
 });
 
@@ -250,6 +250,6 @@ test("footer keeps earlier hint chunk on the first wrapped line", () => {
 	assert.deepEqual(lines.slice(-4, -1), [
 		"Enter confirm",
 		"N/Shift+N note",
-		"Esc dismiss",
+		"Esc dismiss · ? help",
 	]);
 });
diff --git a/tests/render-helpers.test.ts b/tests/render-helpers.test.ts
index 5048119..796b3d0 100644
--- a/tests/render-helpers.test.ts
+++ b/tests/render-helpers.test.ts
@@ -74,6 +74,6 @@ test("renderEditorBlock reapplies background after editor reset sequences", () =
 });
 
 test("editing footers do not advertise tab navigation", () => {
-	assert.equal(renderFooterText("input"), " Enter submit · Esc close");
-	assert.equal(renderFooterText("note"), " Enter save · Esc close");
+	assert.equal(renderFooterText("input"), " Enter submit · Esc close · ? help");
+	assert.equal(renderFooterText("note"), " Enter save · Esc close · ? help");
 });
diff --git a/tests/render-submit.test.ts b/tests/render-submit.test.ts
index 4f4a94e..b0abb7b 100644
--- a/tests/render-submit.test.ts
+++ b/tests/render-submit.test.ts
@@ -1,5 +1,6 @@
 import assert from "node:assert/strict";
 import test from "node:test";
+import { UI_DIMENSIONS } from "../src/constants/ui.ts";
 import { createInitialState } from "../src/state/create.ts";
 import {
 	applyNumberShortcut,
@@ -7,7 +8,6 @@ import {
 	enterQuestionNoteMode,
 	saveNote,
 } from "../src/state/transitions.ts";
-import { UI_DIMENSIONS } from "../src/ui/constants.ts";
 import { renderSubmitScreen } from "../src/ui/render-submit.ts";
 
 function plainTheme() {