diff --git a/apptools.js b/apptool.js
similarity index 97%
rename from apptools.js
rename to apptool.js
index 8669092..0959678 100644
--- a/apptools.js
+++ b/apptool.js
@@ -21,9 +21,9 @@ const ugj_const = {
     dev_hash: '4e9205f9b7e571bec1aa52ab7871f420684fcf96149672a4d550a95863d6b072'
 }
 
-/** クラス elUtil ****************************************************************** */
+/** クラス appTool ****************************************************************** */
 // Electron 動作用
-class elUtil {
+class appTool {
     constructor() {
         this.path = require('path') //window.ocogeapi.path
         this.fs = require('fs') //window.ocogeapi.fs
@@ -316,7 +316,7 @@ class elUtil {
 
     // PyBfm を起動
     launchPyBfm() {
-        let script_path = this.path.join(elutil.library_path, 'pybfm.py');
+        let script_path = this.path.join(apptool.library_path, 'pybfm.py');
         require('child_process').spawn('python3', [script_path]);
     }
 
@@ -327,7 +327,7 @@ class elUtil {
 
 }
 // ブラウザ動作用
-class brUtil {
+class webTool {
     constructor() {
         // GPIOブロックは使えません
         this.gpio_backend = ugj_const.pig;
@@ -385,24 +385,24 @@ class brUtil {
 
 // Electron 動作 / ブラウザ動作自動判別
 // const is_el = (typeof window.ocogeapi !== 'undefined')
-const is_el = (typeof require === 'function');
+const is_app = (typeof require === 'function');
 
 // utilクラスのインスタンスを返す
-const elUtil_new = () => {
-    if (is_el) {
-        let el = new elUtil;
-        el.init();
-        return el;
+const appTool_new = () => {
+    if (is_app) {
+        let ap = new appTool;
+        ap.init();
+        return ap;
     }
-    else return new brUtil;
+    else return new webTool;
 }
 
 // "require" for web browsers if contextIsolation is false && nodeIntegration is true:
-if (!is_el) {
+if (!is_app) {
     var require = module_name => {
         let block;
         switch (module_name) {
-            case '@tensorflow/tfjs':
+            case '@tensorflow/tfjs-node':
                 block = 'TensorFlow';
                 break;
             case '@tensorflow-models/blazeface':
diff --git a/blocks/blocks.js b/blocks/blocks.js
index 886161d..69a1aaa 100644
--- a/blocks/blocks.js
+++ b/blocks/blocks.js
@@ -185,7 +185,7 @@ Blockly.Blocks['ugj_gpio_open'] = {
 };
 Blockly.JavaScript['ugj_gpio_open'] = function (block) {
   Blockly.JavaScript.provideFunction_(
-    'require_gpio', [`const _pi = require('@ocoge.club/` + elutil.gpio_backend + `');`]
+    'require_gpio', [`const _pi = require('@ocoge.club/` + apptool.gpio_backend + `');`]
   );
   var code = `await _pi.gpio_open();\n`; //
   return code;
@@ -540,7 +540,7 @@ Blockly.JavaScript['ugj_serial_open'] = function (block) {
   // var value_tty = Blockly.JavaScript.valueToCode(block, 'tty', Blockly.JavaScript.ORDER_ATOMIC);
   var dropdown_baud = block.getFieldValue('baud');
   Blockly.JavaScript.provideFunction_(
-    'require_gpio', [`const _pi = require('@ocoge.club/` + elutil.gpio_backend + `');`]
+    'require_gpio', [`const _pi = require('@ocoge.club/` + apptool.gpio_backend + `');`]
   );
   var code = `await _pi.serial_open('/dev/serial0', ${dropdown_baud});\n`;
   return code;
@@ -680,9 +680,9 @@ Blockly.Blocks['ugj_i2c_open'] = {
 Blockly.JavaScript['ugj_i2c_open'] = function (block) {
   var value_i2c_address = Blockly.JavaScript.valueToCode(block, 'i2c_address', Blockly.JavaScript.ORDER_ATOMIC);
   Blockly.JavaScript.provideFunction_(
-    'require_gpio', [`const _pi = require('@ocoge.club/` + elutil.gpio_backend + `');`]
+    'require_gpio', [`const _pi = require('@ocoge.club/` + apptool.gpio_backend + `');`]
   );
-  var code = `await _pi.i2c_open(${elutil.i2c_bus}, ${value_i2c_address});\n`;
+  var code = `await _pi.i2c_open(${apptool.i2c_bus}, ${value_i2c_address});\n`;
   return code;
 };
 Blockly.Python['ugj_i2c_open'] = function (block) {
@@ -1106,8 +1106,8 @@ Blockly.JavaScript['oc_speechcommands_init'] = function (block) {
   let cp = undefined, md = undefined;
   if (value_custom_model != "''") {
     let cm = value_custom_model.replace(/(^'|'$)/g, '');
-    cp = `'file://${elutil.path.join(cm, 'model.json')}'`;
-    md = `'file://${elutil.path.join(cm, 'metadata.json')}'`;
+    cp = `'file://${apptool.path.join(cm, 'model.json')}'`;
+    md = `'file://${apptool.path.join(cm, 'metadata.json')}'`;
   }
   var code = `const _checkpointURL = ${cp};
 const _metadataURL = ${md};
@@ -1262,7 +1262,7 @@ Blockly.JavaScript['ugj_canvas_loadimg'] = function (block) {
   var value_imgfilename = Blockly.JavaScript.valueToCode(block, 'imgfilename', Blockly.JavaScript.ORDER_ATOMIC);
   var code = [
     `let _img = new Image();`,
-    `_img.src = '${elutil.doc_root}' + ${value_imgfilename};`,
+    `_img.src = '${apptool.doc_root}' + ${value_imgfilename};`,
     `_img.onload = () => _ctx.drawImage(img,0,0);`,
     // `ugj_canvasImg('${ugj_const.doc_root}' + ${value_imgfilename});`,
     ''
@@ -1739,7 +1739,7 @@ Blockly.Blocks['ugj_library_skyway'] = {
   }
 };
 Blockly.JavaScript['ugj_library_skyway'] = function (block) {
-  var code = `'${elutil.path.join(elutil.library_path, 'skyway.min.js')}'`;
+  var code = `'${apptool.path.join(apptool.library_path, 'skyway.min.js')}'`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 
@@ -2044,7 +2044,7 @@ Blockly.Blocks['ugj_file_readsync'] = {
 Blockly.JavaScript['ugj_file_readsync'] = function (block) {
   var value_filename = Blockly.JavaScript.valueToCode(block, 'filename', Blockly.JavaScript.ORDER_ATOMIC);
   var dropdown_encoding = block.getFieldValue('encoding');
-  let filepath = elutil.path.join(elutil.doc_root, value_filename.replace(/\'/g, ''));
+  let filepath = apptool.path.join(apptool.doc_root, value_filename.replace(/\'/g, ''));
   Blockly.JavaScript.provideFunction_(
     'require_fs', [`const _fs = require('fs');`]
   );
@@ -2270,7 +2270,7 @@ Blockly.Blocks['aquestalk_pi'] = {
 };
 Blockly.JavaScript['aquestalk_pi'] = function (block) {
   var value_talk = Blockly.JavaScript.valueToCode(block, 'talk', Blockly.JavaScript.ORDER_ATOMIC);
-  var code = `'${elutil.path.join(elutil.executable_path, 'aquestalkpi/AquesTalkPi')} -g 50 ' + ${value_talk} + ' | aplay', { shell: true }`;
+  var code = `'${apptool.path.join(apptool.executable_path, 'aquestalkpi/AquesTalkPi')} -g 50 ' + ${value_talk} + ' | aplay', { shell: true }`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 
@@ -2292,7 +2292,7 @@ Blockly.Blocks['ugj_child_fswebcam'] = {
 };
 Blockly.JavaScript['ugj_child_fswebcam'] = function (block) {
   var value_filename = Blockly.JavaScript.valueToCode(block, 'filename', Blockly.JavaScript.ORDER_ATOMIC);
-  var code = `'fswebcam', ['-r', '480x360', '${elutil.doc_root}' + ${value_filename}]`;
+  var code = `'fswebcam', ['-r', '480x360', '${apptool.doc_root}' + ${value_filename}]`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 
@@ -2310,7 +2310,7 @@ Blockly.Blocks['ugj_child_julius'] = {
   }
 };
 Blockly.JavaScript['ugj_child_julius'] = function (block) {
-  var code = `'${elutil.path.join(elutil.executable_path, 'julius/julius-simple')}', ['-C', '${elutil.path.join(elutil.executable_path, 'julius/dictation-kit/am-gmm.jconf')}', '-gram', '${elutil.path.join(elutil.executable_path, 'julius/dic/assistant')}', '-nostrip']`;
+  var code = `'${apptool.path.join(apptool.executable_path, 'julius/julius-simple')}', ['-C', '${apptool.path.join(apptool.executable_path, 'julius/dictation-kit/am-gmm.jconf')}', '-gram', '${apptool.path.join(apptool.executable_path, 'julius/dic/assistant')}', '-nostrip']`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 // irrp.py - pigpioによる赤外線リモコンの学習
@@ -2331,7 +2331,7 @@ Blockly.Blocks['ugj_child_irrecord'] = {
 };
 Blockly.JavaScript['ugj_child_irrecord'] = function (block) {
   var value_gpio = Blockly.JavaScript.valueToCode(block, 'gpio', Blockly.JavaScript.ORDER_ATOMIC);
-  var code = `'python3', ['${elutil.path.join(elutil.library_path, 'irrp.py')}', '-r', '-g', '${value_gpio}', 'signal', '--post', '130']`;
+  var code = `'python3', ['${apptool.path.join(apptool.library_path, 'irrp.py')}', '-r', '-g', '${value_gpio}', 'signal', '--post', '130']`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 // 送信
@@ -2356,7 +2356,7 @@ Blockly.Blocks['ugj_child_irplayback'] = {
 Blockly.JavaScript['ugj_child_irplayback'] = function (block) {
   var value_gpio = Blockly.JavaScript.valueToCode(block, 'gpio', Blockly.JavaScript.ORDER_ATOMIC);
   var value_signal = Blockly.JavaScript.valueToCode(block, 'signal', Blockly.JavaScript.ORDER_ATOMIC);//.replace('{','\\{').replace('}','\\}').replace(/"/g,'\\"').replace(/ /g,'\\ ')
-  var code = `'python3', ['${elutil.path.join(elutil.library_path, 'irrp.py')}', '-p', '-g', '${value_gpio}', '--irdata', ${value_signal}, 'signal']`;
+  var code = `'python3', ['${apptool.path.join(apptool.library_path, 'irrp.py')}', '-p', '-g', '${value_gpio}', '--irdata', ${value_signal}, 'signal']`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 // ハッシュ生成
@@ -2378,7 +2378,7 @@ Blockly.Blocks['ugj_child_irrcvr'] = {
 Blockly.JavaScript['ugj_child_irrcvr'] = function (block) {
   var value_gpio = Blockly.JavaScript.valueToCode(block, 'gpio', Blockly.JavaScript.ORDER_ATOMIC);
   // var code = `'python3', ['./scripts/irrcvr.py', '-g', '${value_gpio}']`;
-  var code = `'${elutil.path.join(elutil.executable_path, 'ir_hash/ir_hash')}', ['${value_gpio}']`;
+  var code = `'${apptool.path.join(apptool.executable_path, 'ir_hash/ir_hash')}', ['${value_gpio}']`;
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
 
@@ -2398,7 +2398,7 @@ Blockly.Blocks['ugj_child_pyscript'] = {
 Blockly.JavaScript['ugj_child_pyscript'] = function (block) {
   var value_script_path = Blockly.JavaScript.valueToCode(block, 'script_path', Blockly.JavaScript.ORDER_ATOMIC);
   // TODO: Assemble JavaScript into code variable.
-  var code = `'python3', ['${elutil.doc_root}/' + ${value_script_path}]`;
+  var code = `'python3', ['${apptool.doc_root}/' + ${value_script_path}]`;
   // TODO: Change ORDER_NONE to the correct strength.
   return [code, Blockly.JavaScript.ORDER_NONE];
 };
diff --git a/blocks/sensors/amg8833/index.js b/blocks/sensors/amg8833/index.js
index 7e180e1..1db0928 100644
--- a/blocks/sensors/amg8833/index.js
+++ b/blocks/sensors/amg8833/index.js
@@ -59,13 +59,13 @@ Blockly.Blocks['ugj_grideye_init'] = {
 Blockly.JavaScript['ugj_grideye_init'] = function (block) {
     var dropdown_addr = block.getFieldValue('addr');
     Blockly.JavaScript.provideFunction_(
-        'require_gpio', [`const _pi = require('@ocoge.club/` + elutil.gpio_backend + `');`]
+        'require_gpio', [`const _pi = require('@ocoge.club/` + apptool.gpio_backend + `');`]
     );
-    let modpath = elutil.path.join(elutil.blocks_sensors_dir, 'amg8833', 'AMG8833x.js');
+    let modpath = apptool.path.join(apptool.blocks_sensors_dir, 'amg8833', 'AMG8833x.js');
     Blockly.JavaScript.provideFunction_(
         'require_amg8833', [`const _amg8833 = require('${modpath}');`]
     );
-    var code = `await _amg8833.init(${elutil.i2c_bus}, ${dropdown_addr}, window.addEventListener);\n`;
+    var code = `await _amg8833.init(${apptool.i2c_bus}, ${dropdown_addr}, window.addEventListener);\n`;
     return code;//
 };
 /********************** */
diff --git a/blocks/sensors/bme280/index.js b/blocks/sensors/bme280/index.js
index a6b0d11..d920a9e 100644
--- a/blocks/sensors/bme280/index.js
+++ b/blocks/sensors/bme280/index.js
@@ -18,14 +18,14 @@ Blockly.Blocks['ugj_bme280'] = {
 Blockly.JavaScript['ugj_bme280'] = function (block) {
     var dropdown_addr = block.getFieldValue('addr');
     Blockly.JavaScript.provideFunction_(
-        'require_gpio', [`const _pi = require('@ocoge.club/` + elutil.gpio_backend + `');`]
+        'require_gpio', [`const _pi = require('@ocoge.club/` + apptool.gpio_backend + `');`]
     );
-    let modpath = elutil.path.join(elutil.blocks_sensors_dir, 'bme280', 'BME280x.js');
+    let modpath = apptool.path.join(apptool.blocks_sensors_dir, 'bme280', 'BME280x.js');
     Blockly.JavaScript.provideFunction_(
         'require_bme280', [`const _bme280 = require('${modpath}');`]
     );
     var code = `const options = {
-    i2cBusNo: ${elutil.i2c_bus},
+    i2cBusNo: ${apptool.i2c_bus},
     i2cAddress: ${dropdown_addr}
   };
   await _bme280.init(options);
diff --git a/blocks/sensors/dht11/index.js b/blocks/sensors/dht11/index.js
index b54a03b..a465784 100644
--- a/blocks/sensors/dht11/index.js
+++ b/blocks/sensors/dht11/index.js
@@ -15,7 +15,7 @@ Blockly.Blocks['ugj_dht11'] = {
 };
 Blockly.JavaScript['ugj_dht11'] = function (block) {
     var value_pin = Blockly.JavaScript.valueToCode(block, 'pin', Blockly.JavaScript.ORDER_ATOMIC);
-    let pypath = elutil.path.join(elutil.blocks_sensors_dir, 'dht11', 'dht11.py');
+    let pypath = apptool.path.join(apptool.blocks_sensors_dir, 'dht11', 'dht11.py');
     var code = `let _th = require('child_process').spawnSync('python3', ['${pypath}', '${value_pin}'], {timeout: 5000}).stdout.toString();
     let _dhtdata = JSON.parse(_th);`;
     // let _dht11data[0] = 
diff --git a/blocks/sensors/paj7620/index.js b/blocks/sensors/paj7620/index.js
index ea86177..720cd6b 100644
--- a/blocks/sensors/paj7620/index.js
+++ b/blocks/sensors/paj7620/index.js
@@ -33,13 +33,13 @@ Blockly.Blocks['ugj_gesture_init'] = {
 Blockly.JavaScript['ugj_gesture_init'] = function (block) {
     var value_i2c_addr = Blockly.JavaScript.valueToCode(block, 'i2c_addr', Blockly.JavaScript.ORDER_ATOMIC);
     Blockly.JavaScript.provideFunction_(
-        'require_gpio', [`const _pi = require('@ocoge.club/` + elutil.gpio_backend + `');`]
+        'require_gpio', [`const _pi = require('@ocoge.club/` + apptool.gpio_backend + `');`]
     );
-    let modpath = elutil.path.join(elutil.blocks_sensors_dir, 'paj7620', 'PAJ7620x.js');
+    let modpath = apptool.path.join(apptool.blocks_sensors_dir, 'paj7620', 'PAJ7620x.js');
     Blockly.JavaScript.provideFunction_(
         'require_paj7620', [`const _paj7620 = require('${modpath}');`]
     );
-    var code = `await _paj7620.init(${elutil.i2c_bus}, ${value_i2c_addr}, window.addEventListener);
+    var code = `await _paj7620.init(${apptool.i2c_bus}, ${value_i2c_addr}, window.addEventListener);
     `;
     return code;
 };
diff --git a/index.html b/index.html
index ff82623..968b64a 100644
--- a/index.html
+++ b/index.html
@@ -1044,7 +1044,7 @@
   <script src="./node_modules/@blockly/field-slider/dist/index.js"></script>
   <script src="./lib/custom-dialog.js"></script>
   <script src="./blocks/blocks.js"></script>
-  <script src="./apptools.js"></script>
+  <script src="./apptool.js"></script>
   <script src="./index.js"></script>
   <script src="./node_modules/js-beautify/js/lib/beautify.js"></script>
   <script src="./node_modules/prismjs/prism.js"></script>
diff --git a/index.js b/index.js
index 6793647..8eda22b 100644
--- a/index.js
+++ b/index.js
@@ -2,12 +2,12 @@
 
 const { checkPrimeSync } = require('crypto');
 
-let elutil = elUtil_new();
+let apptool = appTool_new();
 
 
 const testfunc = async () => {
-  elutil.openURL('http://ocoge.club');
-  // console.log(elutil.app_path);
+  apptool.openURL('http://ocoge.club');
+  // console.log(apptool.app_path);
 }
 
 //============ User Customize Start ===============
@@ -258,10 +258,10 @@ let ugj_sounds = (names => { // サウンドファイルのいろいろの配列
 
 // マスコット選択
 const ugj_selectMascot = async () => {
-  let fname = await elutil.selectMascotFile();
+  let fname = await apptool.selectMascotFile();
   if (fname) {
     ugj_canvasBgImg(fname, -1, -1);
-    elutil.setMascotFilePath(fname);
+    apptool.setMascotFilePath(fname);
   }
 }
 
@@ -289,7 +289,7 @@ const ugj_newWorkspace = () => {
   ugj_confirm('新規ワークスペース', '保存していない内容はすべて破棄されます。よろしいですか？', okey => {
     if (okey) {
       workspace.clear();
-      elutil.newFile();
+      apptool.newFile();
     }
   });
 }
@@ -298,12 +298,12 @@ const ugj_newWorkspace = () => {
 const ugj_saveWorkspaceToFile = async () => {
   let xml = Blockly.Xml.workspaceToDom(workspace);
   let xml_text = Blockly.Xml.domToText(xml);
-  if (await elutil.saveWsFile(xml_text) === false) {
+  if (await apptool.saveWsFile(xml_text) === false) {
     window.alert('保存できませんでした。');
   }
 }
 const ugj_loadWorkspaceFromFile = async () => {
-  let xml_text = await elutil.loadWsFile();
+  let xml_text = await apptool.loadWsFile();
   if (xml_text.length > 0) {
     let xml = Blockly.Xml.textToDom(xml_text);
     Blockly.Xml.domToWorkspace(xml, workspace);
@@ -312,7 +312,7 @@ const ugj_loadWorkspaceFromFile = async () => {
 
 // ワークスペースを別名で保存
 const ugj_saveWorkspaceAs = () => {
-  elutil.newFile();
+  apptool.newFile();
   ugj_saveWorkspaceToFile();
 }
 
@@ -337,7 +337,7 @@ const ugj_loadWorkspace = () => {
 // コード生成
 const ugj_generateCode = () => {
   let code;
-  if (elutil.lang == 'py') { // Python コード出力
+  if (apptool.lang == 'py') { // Python コード出力
     try {
       code = Blockly.Python.workspaceToCode(workspace);
     } catch (e) { // Pythonコードを持たないブロックがある場合
@@ -372,7 +372,7 @@ const ugj_pyBeautify = (code) => {
 
 // コードフォーマッティング
 const ugj_formatCode = code => {
-  if (elutil.lang == 'py') // フォーマッティング
+  if (apptool.lang == 'py') // フォーマッティング
     code = ugj_pyBeautify(code);
   else
     code = js_beautify(code, { indent_size: 2 });
@@ -385,12 +385,12 @@ const ugj_runCode = async () => {
   let btnel = document.getElementById('runbtn');
   btnel.disabled = true;
   let code = ugj_generateCode();
-  if (elutil.lang == 'js') {
+  if (apptool.lang == 'js') {
     let AsyncFunction = Object.getPrototypeOf(async function () { }).constructor
     let ocogeFunc = new AsyncFunction(code);
     await ocogeFunc().catch(e => { window.alert(e); });
     console.log('Code Execution done.');
-  } else if (elutil.lang == 'py') {
+  } else if (apptool.lang == 'py') {
     if (code) ugj_spawnPyboard(code, 'r');
   }
   btnel.disabled = false;
@@ -398,7 +398,7 @@ const ugj_runCode = async () => {
 
 // Pyboard ocoge
 const ugj_spawnPyboard = (code, mode) => {
-  let script_path = elutil.path.join(elutil.library_path, 'pybtool.py');
+  let script_path = apptool.path.join(apptool.library_path, 'pybtool.py');
   let p = require('child_process').spawn('python3', [script_path, mode], { env: { "PYTHONUTF8": "1" } });
   p.stdin.write(code);
   p.stdin.end();
@@ -420,14 +420,14 @@ const ugj_showCode = () => {
   let code = ugj_generateCode(); // コード生成
 
   content.innerHTML = ugj_htmlEntities(ugj_formatCode(code));
-  if (elutil.lang == 'py') content.setAttribute('class', 'language-python');
+  if (apptool.lang == 'py') content.setAttribute('class', 'language-python');
   else content.setAttribute('class', 'language-javascript');
   Prism.highlightElement(content);
 
   dialog.showModal();
 
   const save_to_file = code => {
-    if (elutil.saveFile(code, elutil.lang) === false) window.alert('保存できませんでした。');
+    if (apptool.saveFile(code, apptool.lang) === false) window.alert('保存できませんでした。');
   }
 
   const close_cb = () => {
@@ -437,7 +437,7 @@ const ugj_showCode = () => {
     document.removeEventListener('keyup', keyev_cb);
   }
   const export_cb = () => {
-    if (elutil.lang == 'js') {
+    if (apptool.lang == 'js') {
       save_to_file(ugj_formatCode(ugj_asyncIife(code)));
     } else {
       ugj_spawnPyboard(ugj_formatCode(code), 'd');
@@ -446,12 +446,12 @@ const ugj_showCode = () => {
   }
   const keyev_cb = ev => {
     if (ev.key == 's' && ev.ctrlKey) {
-      if (elutil.lang == 'js') {
+      if (apptool.lang == 'js') {
         // JS-CLI モード
         // blackboardWrite()とwindow.alert()、fukidashi()をconsole.log()に書き換え、
-        // document... と ugj_... と elutil... をコメントアウト（ブラウザ関連部分の追放という意味では不完全なので注意）
+        // document... と ugj_... と apptool... をコメントアウト（ブラウザ関連部分の追放という意味では不完全なので注意）
         // あと正規表現もいい加減
-        code = code.replace(/const appendDiv[^#]*\/\/#/gm, 'const blackboardWrite = text => console.log(text);').replace('window.alert', 'console.log').replace(/_fukidashi(.*), \d+(\);)/gm, 'console.log$1$2').replace(/(^(?=.*document.)[^;]*;)/gm, '/* $1 */').replace(/(^(?=.*ugj_)[^;]*;)/gm, '/* $1 */').replace(/(^(?=.*elutil.)[^;]*;)/gm, '/* $1 */');
+        code = code.replace(/const appendDiv[^#]*\/\/#/gm, 'const blackboardWrite = text => console.log(text);').replace('window.alert', 'console.log').replace(/_fukidashi(.*), \d+(\);)/gm, 'console.log$1$2').replace(/(^(?=.*document.)[^;]*;)/gm, '/* $1 */').replace(/(^(?=.*ugj_)[^;]*;)/gm, '/* $1 */').replace(/(^(?=.*apptool.)[^;]*;)/gm, '/* $1 */');
       }
       save_to_file(ugj_formatCode(ugj_asyncIife(code)));
       close_cb();
@@ -623,7 +623,7 @@ Blockly.svgResize(workspace);
 // ワークスペースの未保存の変更のフラグ
 const ugj_wsUpdateCB = event => {
   if (event.type != Blockly.Events.UI) {
-    elutil.setWsChanged(true);
+    apptool.setWsChanged(true);
   }
 }
 
@@ -648,17 +648,17 @@ window.onload = () => {
 
   // ワークスペースといくつかの環境のオートリストア
   ugj_loadWorkspace();
-  elutil.loadPrefsFromLS();
+  apptool.loadPrefsFromLS();
   setTimeout(() => { // 環境設定のロードが終わってからイベントリスナを作成
     workspace.addChangeListener(ugj_wsUpdateCB);
   }, 100);
   // 背景canvas
-  ugj_canvasBgImg(elutil.getMascotFilePath(), -1, -1);
+  ugj_canvasBgImg(apptool.getMascotFilePath(), -1, -1);
 }
 window.addEventListener('beforeunload', () => {
   // window.onbeforeunload = () => {
   ugj_saveWorkspace();
-  elutil.savePrefsToLS();
-  elutil.cleanupGPIO();
+  apptool.savePrefsToLS();
+  apptool.cleanupGPIO();
   // }
 });
diff --git a/main.js b/main.js
index 0203743..c4c9e2e 100644
--- a/main.js
+++ b/main.js
@@ -166,7 +166,7 @@ let template = [
             click: (item, focusedWindow) => {
               if (focusedWindow) {
                 toggleCheck_i2c("i2c-1");
-                focusedWindow.webContents.executeJavaScript('elutil.setI2cbusNo("1")');
+                focusedWindow.webContents.executeJavaScript('apptool.setI2cbusNo("1")');
               }
             }
           },
@@ -177,7 +177,7 @@ let template = [
             click: (item, focusedWindow) => {
               if (focusedWindow) {
                 toggleCheck_i2c("i2c-6");
-                focusedWindow.webContents.executeJavaScript('elutil.setI2cbusNo("6")');
+                focusedWindow.webContents.executeJavaScript('apptool.setI2cbusNo("6")');
               }
             }
           },
@@ -196,7 +196,7 @@ let template = [
               if (focusedWindow) {
                 // menu.getMenuItemById('py').checked = false;
                 toggleCheck_lang("js");
-                focusedWindow.webContents.executeJavaScript('elutil.setLang("js")');
+                focusedWindow.webContents.executeJavaScript('apptool.setLang("js")');
               }
             }
           },
@@ -208,7 +208,7 @@ let template = [
               if (focusedWindow) {
                 // menu.getMenuItemById('js').checked = false;
                 toggleCheck_lang("py");
-                focusedWindow.webContents.executeJavaScript('elutil.setLang("py")');
+                focusedWindow.webContents.executeJavaScript('apptool.setLang("py")');
               }
             }
           },
@@ -224,7 +224,7 @@ let template = [
       {
         label: "Launch PyBfm",
         click: (item, focusedWindow) => {
-          focusedWindow.webContents.executeJavaScript('elutil.launchPyBfm()');
+          focusedWindow.webContents.executeJavaScript('apptool.launchPyBfm()');
         },
       },
     ]
diff --git a/package.json b/package.json
index 4a10b0a..d237a81 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ocoge",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "description": "ブロックベースビジュアルプログラム開発・実行環境",
   "main": "main.js",
   "scripts": {
@@ -62,4 +62,4 @@
       ]
     }
   }
-}
+}
\ No newline at end of file