diff --git a/src/common/document.ts b/src/common/document.ts
index 4710260..61b6588 100644
--- a/src/common/document.ts
+++ b/src/common/document.ts
@@ -1,7 +1,7 @@
 import { chars } from './utils.ts';
 import Row from './row.ts';
 import { getRuntime } from './runtime.ts';
-import { Position, TAB_SIZE } from './mod.ts';
+import { Position, SCROLL_TAB_SIZE } from './mod.ts';
 
 export class Document {
 	#filename: string | null;
@@ -80,7 +80,7 @@ export class Document {
 	}
 
 	private updateRow(r: Row): void {
-		r.render = chars(r.toString().replace('\t', ' '.repeat(TAB_SIZE)));
+		r.render = chars(r.toString().replace('\t', ' '.repeat(SCROLL_TAB_SIZE)));
 	}
 
 	private rowsToString(): string {
diff --git a/src/common/editor.ts b/src/common/editor.ts
index 157a28d..428a0e4 100644
--- a/src/common/editor.ts
+++ b/src/common/editor.ts
@@ -1,7 +1,7 @@
 import Ansi, { KeyCommand } from './ansi.ts';
 import Buffer from './buffer.ts';
 import Document from './document.ts';
-import { ITerminalSize, logToFile, Position, VERSION } from './mod.ts';
+import { ITerminalSize, logToFile, Position, SCROLL_VERSION } from './mod.ts';
 import Row from './row.ts';
 import { ctrlKey, maxAdd, posSub, truncate } from './utils.ts';
 
@@ -292,7 +292,7 @@ class Editor {
 
 	private drawPlaceholderRow(y: number): void {
 		if (y === Math.trunc(this.#screen.rows / 2) && this.#document.isEmpty()) {
-			const message = `Kilo editor -- version ${VERSION}`;
+			const message = `Scroll editor -- version ${SCROLL_VERSION}`;
 			const messageLen = (message.length > this.#screen.cols)
 				? this.#screen.cols
 				: message.length;
diff --git a/src/common/mod.ts b/src/common/mod.ts
index 648d6cb..47e5017 100644
--- a/src/common/mod.ts
+++ b/src/common/mod.ts
@@ -6,5 +6,6 @@ export * from './utils.ts';
 
 export type * from './types.ts';
 
-export const VERSION = '0.0.1';
-export const TAB_SIZE = 4;
+export const SCROLL_VERSION = '0.0.1';
+export const SCROLL_QUIT_TIMES = 3;
+export const SCROLL_TAB_SIZE = 4;
diff --git a/src/common/row.ts b/src/common/row.ts
index 3ac252d..5b825d5 100644
--- a/src/common/row.ts
+++ b/src/common/row.ts
@@ -1,4 +1,4 @@
-import { TAB_SIZE } from './mod.ts';
+import { SCROLL_TAB_SIZE } from './mod.ts';
 import * as Util from './utils.ts';
 
 /**
@@ -49,7 +49,7 @@ export class Row {
 		let j = 0;
 		for (; j < cx; j++) {
 			if (this.chars[j] === '\t') {
-				rx += (TAB_SIZE - 1) - (rx % TAB_SIZE);
+				rx += (SCROLL_TAB_SIZE - 1) - (rx % SCROLL_TAB_SIZE);
 			}
 			rx++;
 		}