diff --git a/browser/dom/edit.ts b/browser/dom/edit.ts
index e08fc33..e292c02 100644
--- a/browser/dom/edit.ts
+++ b/browser/dom/edit.ts
@@ -1,7 +1,7 @@
 import { goHead, goLine } from "./motion.ts";
 import { press } from "./press.ts";
 import { getLineCount } from "./node.ts";
-import { range } from "../../range.ts";
+import { range } from "@core/iterutil/range";
 import { textInput } from "./dom.ts";
 import { isArray } from "@core/unknownutil/is/array";
 import { isNumber } from "@core/unknownutil/is/number";
@@ -10,24 +10,24 @@ import type { Scrapbox } from "@cosense/types/userscript";
 declare const scrapbox: Scrapbox;
 
 export const undo = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("z", { ctrlKey: true });
   }
 };
 export const redo = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("z", { shiftKey: true, ctrlKey: true });
   }
 };
 
 export const insertIcon = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("i", { ctrlKey: true });
   }
 };
 
 export const insertTimestamp = (index = 1): void => {
-  for (const _ of range(0, index)) {
+  for (const _ of range(1, index)) {
     press("t", { altKey: true });
   }
 };
@@ -94,12 +94,12 @@ export const deleteLines = async (
 };
 
 export const indentLines = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowRight", { ctrlKey: true });
   }
 };
 export const outdentLines = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowLeft", { ctrlKey: true });
   }
 };
@@ -120,23 +120,23 @@ export const moveLinesBefore = (from: number, to: number): void => {
   }
 };
 export const upLines = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowUp", { ctrlKey: true });
   }
 };
 export const downLines = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowDown", { ctrlKey: true });
   }
 };
 
 export const indentBlocks = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowRight", { altKey: true });
   }
 };
 export const outdentBlocks = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowLeft", { altKey: true });
   }
 };
@@ -148,12 +148,12 @@ export const moveBlocks = (count: number): void => {
   }
 };
 export const upBlocks = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowUp", { altKey: true });
   }
 };
 export const downBlocks = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowDown", { altKey: true });
   }
 };
diff --git a/browser/dom/motion.ts b/browser/dom/motion.ts
index f86c553..61f1f47 100644
--- a/browser/dom/motion.ts
+++ b/browser/dom/motion.ts
@@ -12,7 +12,7 @@ import {
 } from "./node.ts";
 import { caret } from "./caret.ts";
 import { isHeightViewable } from "./isHeightViewable.ts";
-import { range } from "../../range.ts";
+import { range } from "@core/iterutil/range";
 
 /** @deprecated
  * Long press at the end of cursor line to gain focus
@@ -38,7 +38,7 @@ export const focusEnd = async (holding = 1000): Promise<void> => {
  * @param [count=1] - Number of moves to perform
  */
 export const moveLeft = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowLeft");
   }
 };
@@ -47,7 +47,7 @@ export const moveLeft = (count = 1): void => {
  * @param [count=1] - Number of moves to perform
  */
 export const moveUp = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowUp");
   }
 };
@@ -56,7 +56,7 @@ export const moveUp = (count = 1): void => {
  * @param [count=1] - Number of moves to perform
  */
 export const moveDown = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowDown");
   }
 };
@@ -65,7 +65,7 @@ export const moveDown = (count = 1): void => {
  * @param [count=1] - Number of moves to perform
  */
 export const moveRight = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("ArrowRight");
   }
 };
@@ -193,7 +193,7 @@ export const scrollHalfDown = async (count = 1): Promise<void> => {
  * @param [count=1] - Number of scroll operations to perform
  */
 export const scrollUp = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("PageUp");
   }
 };
@@ -202,7 +202,7 @@ export const scrollUp = (count = 1): void => {
  * @param [count=1] - Number of scroll operations to perform
  */
 export const scrollDown = (count = 1): void => {
-  for (const _ of range(0, count)) {
+  for (const _ of range(1, count)) {
     press("PageDown");
   }
 };
diff --git a/range.test.ts b/range.test.ts
deleted file mode 100644
index 047841f..0000000
--- a/range.test.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import { range } from "./range.ts";
-import { assertStrictEquals } from "@std/assert";
-
-Deno.test("range()", () => {
-  let count = 0;
-  for (const i of range(0, 10)) {
-    assertStrictEquals<number>(i, count++);
-  }
-  assertStrictEquals<number>(10, count);
-
-  count = 5;
-  for (const i of range(5, 12)) {
-    assertStrictEquals<number>(i, count++);
-  }
-  assertStrictEquals<number>(12, count);
-
-  count = 0;
-  for (const i of range(5, 5)) {
-    assertStrictEquals<number>(i, count++);
-  }
-  assertStrictEquals<number>(0, count);
-});
diff --git a/range.ts b/range.ts
deleted file mode 100644
index 37258c7..0000000
--- a/range.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-export function* range(start: number, end: number) {
-  for (let i = start; i < end; i++) {
-    yield i;
-  }
-}