diff --git a/builtins.ts b/builtins.ts
index 5432817..0ae281b 100644
--- a/builtins.ts
+++ b/builtins.ts
@@ -4,7 +4,7 @@ import {
 } from "./window.ts";
 import { font } from "./font.ts";
 import { keyDown, keyPressed, keyReleased } from "./keyboard.ts";
-// import { codeSheet } from "./sheet.ts";
+import { addToContext } from "./runcode.ts";
 
 // deno-fmt-ignore
 const sprites = [
@@ -66,7 +66,11 @@ const faux = {
 	key_down: keyDown,
 	key_pressed: keyPressed,
 	key_released: keyReleased,
-	// code_sheet: codeSheet,
+	log: console.log,
 };
 
+for (const key in faux) {
+	addToContext(key, faux[key as keyof typeof faux]);
+}
+
 export default faux;
\ No newline at end of file
diff --git a/font.ts b/font.ts
index 3f0e5e7..90f7f41 100644
--- a/font.ts
+++ b/font.ts
@@ -272,4 +272,236 @@ export const font: {[key: string]: Array<number>} = {
 		0, 1, 1, 1,
 		0, 0, 0, 0,
 	],
+	"(": [
+		0, 0, 0, 0,
+		0, 0, 0, 1,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 1,
+	],
+	")": [
+		0, 0, 0, 0,
+		0, 1, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 1, 0, 0,
+	],
+	"[": [
+		0, 0, 0, 0,
+		0, 0, 1, 1,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 1,
+	],
+	"]": [
+		0, 0, 0, 0,
+		0, 1, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 1, 1, 0,
+	],
+	"{": [
+		0, 0, 0, 0,
+		0, 0, 1, 1,
+		0, 0, 1, 0,
+		0, 1, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 1,
+	],
+	"}": [
+		0, 0, 0, 0,
+		0, 1, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 1,
+		0, 0, 1, 0,
+		0, 1, 1, 0,
+	],
+	":": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 0,
+	],
+	";": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 1, 0, 0,
+	],
+	"'": [
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+	],
+	'"': [
+		0, 0, 0, 0,
+		0, 1, 0, 1,
+		0, 1, 0, 1,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+	],
+	"1": [
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 1, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 1, 1, 1,
+	],
+	"2": [
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 1, 0, 1,
+		0, 0, 0, 1,
+		0, 0, 1, 0,
+		0, 1, 1, 1,
+	],
+	"3": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 0, 0, 1,
+		0, 0, 1, 0,
+		0, 0, 0, 1,
+		0, 1, 1, 0,
+	],
+	"4": [
+		0, 0, 0, 0,
+		0, 1, 0, 1,
+		0, 1, 0, 1,
+		0, 1, 1, 1,
+		0, 0, 0, 1,
+		0, 0, 0, 1,
+	],
+	"5": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 1, 0, 0,
+		0, 1, 1, 0,
+		0, 0, 0, 1,
+		0, 1, 1, 0,
+	],
+	"6": [
+		0, 0, 0, 0,
+		0, 0, 0, 1,
+		0, 0, 1, 0,
+		0, 1, 1, 1,
+		0, 1, 0, 1,
+		0, 1, 1, 1,
+	],
+	"7": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 0, 0, 1,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+	],
+	"8": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 1, 0, 1,
+		0, 1, 1, 1,
+		0, 1, 0, 1,
+		0, 1, 1, 1,
+	],
+	"9": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 1, 0, 1,
+		0, 1, 1, 1,
+		0, 0, 1, 0,
+		0, 1, 0, 0,
+	],
+	"0": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 1, 0, 1,
+		0, 1, 0, 1,
+		0, 1, 0, 1,
+		0, 1, 1, 1,
+	],
+	"+": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 1, 1, 1,
+		0, 0, 1, 0,
+		0, 0, 0, 0,
+	],
+	"-": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+	],
+	"_": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+	],
+	"`": [
+		0, 0, 0, 0,
+		0, 1, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+	],
+	"~": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 1,
+		0, 1, 1, 1,
+		0, 1, 0, 0,
+		0, 0, 0, 0,
+	],
+	"/": [
+		0, 0, 0, 0,
+		0, 0, 0, 1,
+		0, 0, 0, 1,
+		0, 0, 1, 0,
+		0, 1, 0, 0,
+		0, 1, 0, 0,
+	],
+	"?": [
+		0, 0, 0, 0,
+		0, 1, 1, 1,
+		0, 0, 0, 1,
+		0, 0, 1, 1,
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+	],
+	"\\": [
+		0, 0, 0, 0,
+		0, 1, 0, 0,
+		0, 1, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 0, 1,
+		0, 0, 0, 1,
+	],
+	"|": [
+		0, 0, 0, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+		0, 0, 1, 0,
+	],
 }
\ No newline at end of file
diff --git a/index.ts b/index.ts
index 69496f0..75acb52 100644
--- a/index.ts
+++ b/index.ts
@@ -1,6 +1,7 @@
 import {
 	mainloop,
 	frame,
+	clearScreen,
 } from "./window.ts";
 import { codeSheet } from "./sheet.ts";
 import { refreshKeyboard } from "./keyboard.ts";
@@ -11,6 +12,8 @@ const game = codeSheet(0);
 game.init();
 
 let mode: "play" | "edit" = "edit";
+
+clearScreen();
   
 await mainloop((_t) => {
 	// TODO: use t
diff --git a/repl.ts b/repl.ts
index 8ec35df..df972c5 100644
--- a/repl.ts
+++ b/repl.ts
@@ -1,11 +1,22 @@
 import faux from "./builtins.ts";
 import { getKeysPressed, shiftKeyDown, shiftMap, K } from "./keyboard.ts";
 import { font } from "./font.ts";
+import { runCode } from "./runcode.ts";
 
+const lineHeight = 6;
+
+let maxLineLen = 0;
 let line = "";
 let index = 0;
+let y = 0;
+let result = "";
 
 const update = () => {
+	if (result) {
+		console.log("result:", result);
+		y += lineHeight; // TODO: multiply if multiline
+		result = "";
+	}
 	for (const key of getKeysPressed()) {
 		let char = String.fromCharCode(key).toLowerCase();
 		if (shiftKeyDown()) {
@@ -19,10 +30,9 @@ const update = () => {
 			line = line.slice(0, index)+char+line.slice(index);
 			index += 1;
 		} else if (key === K.BACKSPACE) {
-			line = line.slice(0, -1);
-			index -= 1;
-			if (index < 0) {
-				index = 0;
+			if (index > 0) {
+				line = line.slice(0, index-1)+line.slice(index);
+				index -= 1;
 			}
 		} else if (key === K.ARROW_LEFT) {
 			index -= 1;
@@ -34,14 +44,28 @@ const update = () => {
 			if (index > line.length) {
 				index = line.length;
 			}
+		} else if (key === K.ENTER) {
+			const ran = runCode('return '+line);
+			console.log('ran:', ran);
+			result = ran?.toString?.();
+			maxLineLen = 0;
+			line = "";
+			index = 0;
+			y += lineHeight;
 		}
 	}
+	maxLineLen = Math.max(maxLineLen, line.length);
 }
 
 const draw = () => {
-	faux.clear_screen();
-	faux.draw_rect((2+index)*4, 0, 5, 6, 3);
-	faux.draw_text(0, 0, "> "+line);
+	if (result) {
+		faux.draw_rect(0, y, 4*result.length+1, lineHeight+1, 6);
+		faux.draw_text(0, y, result);
+	} else {
+		faux.draw_rect(0, y, 4*(2+maxLineLen+1)+1, lineHeight+1, 6);
+		faux.draw_rect((2+index)*4, y+1, 4, lineHeight-1, 3);
+		faux.draw_text(0, y, "> "+line);
+	}
 }
 
 export const repl = {
diff --git a/runcode.ts b/runcode.ts
new file mode 100644
index 0000000..4ea0a58
--- /dev/null
+++ b/runcode.ts
@@ -0,0 +1,33 @@
+// deno-lint-ignore no-explicit-any
+const G: any = {};
+const context = new Proxy(G, {
+	get: (target, prop) => {
+		return target[prop];
+	},
+	set: (target, prop, value) => {
+		target[prop] = value;
+		return true;
+	},
+	has: () => {
+		return true;
+	},
+});
+
+export const runCode = (code: string) => {
+	try {
+		new Function(code);
+	} catch (err) {
+		throw err;
+	}
+	const fn = new Function("context", `
+		with (context) {
+			${code}
+		}
+	`);
+	return fn(context);
+}
+
+// deno-lint-ignore no-explicit-any
+export const addToContext = (name: string, value: any) => {
+	G[name] = value;
+}
\ No newline at end of file
diff --git a/sheet.ts b/sheet.ts
index f683e30..3a45030 100644
--- a/sheet.ts
+++ b/sheet.ts
@@ -1,5 +1,5 @@
-import faux from "./builtins.ts";
 import { getCart } from "./cart.ts";
+import { runCode, addToContext } from "./runcode.ts";
 
 export type SheetType = "code" | "spritesheet" | "map" | "sfx" | "patterns" | "fonts";
 
@@ -9,30 +9,7 @@ const getSheet = (n: number) => {
 
 export const codeSheet = (sheet: number) => {
 	const code = getSheet(sheet);
-	try {
-		new Function(code);
-	} catch (err) {
-		throw err;
-	}
-	const fn = new Function("context", `
-		with (context) {
-			${code}
-		}
-	`);
-	return fn(context);
+	return runCode(code);
 }
 
-// deno-lint-ignore no-explicit-any
-const G: any = {...faux, faux, log: console.log, code_sheet: codeSheet};
-const context = new Proxy(G, {
-	get: (target, prop) => {
-		return target[prop];
-	},
-	set: (target, prop, value) => {
-		target[prop] = value;
-		return true;
-	},
-	has: () => {
-		return true;
-	},
-});
\ No newline at end of file
+addToContext("code_sheet", codeSheet);
\ No newline at end of file