diff --git a/.sonarcloud.properties b/.sonarcloud.properties
new file mode 100644
index 0000000..468a823
--- /dev/null
+++ b/.sonarcloud.properties
@@ -0,0 +1,3 @@
+sonar.issue.ignore.multicriteria=e1
+sonar.issue.ignore.multicriteria.e1.ruleKey=javascript:S3504
+sonar.issue.ignore.multicriteria.e1.resourceKey=**
diff --git a/app/index.js b/app/index.js
index e8fd7ef..e69fafb 100644
--- a/app/index.js
+++ b/app/index.js
@@ -55,8 +55,10 @@ Router.add('/', function(render) {
 
 // test
 Router.add('/test', function(render) {
+    var test_profile_filepath = "data/test-oss-korea-2023.json";
+
     window.test_start = function(test_id) {
-        SHELL.show(["cscript", "app.js", "testloader", test_id]);
+        SHELL.show(["cscript", "app.js", "testloader", test_id, test_profile_filepath]);
     };
 
     window.gui_check = function() {
@@ -69,7 +71,7 @@ Router.add('/test', function(render) {
         alert("모든 메시지가 정상적으로 보였다면 테스트에 성공한 것입니다.");
     };
 
-    var content = FILE.readFile("data/test-oss-20231030.json", FILE.CdoCharset.CdoUTF_8);
+    var content = FILE.readFile(test_profile_filepath, FILE.CdoCharset.CdoUTF_8);
     var data = JSON.parse(content);
     render("app/test.html", {
         "data": data
@@ -100,7 +102,7 @@ Router.add('/notepad', function(render) {
         return $.summernote;
     });
 
-	document.getElementById("useragent").innerHTML = window.navigator.userAgent;
+    document.getElementById("useragent").innerHTML = window.navigator.userAgent;
 });
 
 // go
diff --git a/build.bat b/build_native_libraries.bat
similarity index 100%
rename from build.bat
rename to build_native_libraries.bat
diff --git a/lib/adb.js b/lib/adb.js
index 711d348..6c8845a 100644
--- a/lib/adb.js
+++ b/lib/adb.js
@@ -1,22 +1,22 @@
-////////////////////////////////////////////////////////////////////////
 // Android Debug Bridge API
-///////////////////////////////////////////////////////////////////////
-
+// Namhyeon Go (Catswords Research) <abuse@catswords.net>
+// https://github.com/gnh1201/welsonjs
 var SHELL = require("lib/shell");
 var SYS = require("lib/system");
 
 // A common Android devices
 function ADBObject() {
-    this.binPath = "bin\\platform-tools_r33.0.0-windows\\platform-tools\\adb.exe";
+    this._interface = SHELL.create();
 
     this.setBinPath = function(binPath) {
         this.binPath = binPath;
+        this._interface.setPrefix(this.binPath);
         return this;
     };
 
     this.getDevices = function() {
         var devices = [];
-        var result = SHELL.exec([this.binPath, "devices"]);
+        var result = this._interface.exec(["devices"]);
 
         splitLn(result).forEach(function(line) {
             var row = line.split(/\s+/);
@@ -63,28 +63,32 @@ function ADBObject() {
 
     // download a file from target device 
     this.pull = function(id, path) {
-        return SHELL.exec([this.binPath, "-s", id, "pull", path, "data\\"]);
+        return this._interface.exec(["-s", id, "pull", path, "data\\"]);
     };
 
     // upload a file to target device
     this.push = function(id, filename, path) {
-        return SHELL.exec([this.binPath, "-s", id, "push", "data\\" + filename, path]);
+        return this._interface.exec(["-s", id, "push", "data\\" + filename, path]);
     };
     
     // install APK file
     this.install = function(id, filename) {
-        return SHELL.exec([this.binPath, "-s", id, "install", "data\\" + filename]);
+        return this._interface.exec(["-s", id, "install", "data\\" + filename]);
     };
     
     // Uninstall the App
     this.uninstall = function(id, appname) {
-        return SHELL.exec([this.binPath, "-s", id, "uninstall", appname]);
+        return this._interface.exec(["-s", id, "uninstall", appname]);
     };
 
     // reboot device
     this.reboot = function(id) {
-        return SHELL.exec([this.binPath, "-s", id, "reboot"]);
+        return this._interface.exec(["-s", id, "reboot"]);
     };
+
+    // set the binary path
+    this.binPath = "bin\\platform-tools_r33.0.0-windows\\platform-tools\\adb.exe";
+    this._interface.setPrefix(this.binPath);
 }
 
 // An Android Emulator
@@ -125,7 +129,7 @@ exports.createEmulator = function(binPath) {
     return new EmulatorObject(binPath);
 };
 
-exports.VERSIONINFO = "Android Debug Bridge Interface (adb.js) version 0.2.1";
+exports.VERSIONINFO = "Android Debug Bridge Interface (adb.js) version 0.2.2";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/autoit.js b/lib/autoit.js
index ef47feb..82122bf 100644
--- a/lib/autoit.js
+++ b/lib/autoit.js
@@ -1,13 +1,13 @@
-////////////////////////////////////////////////////////////////////////
-// AutoIt (AutoIt3, AutoItX) API
-////////////////////////////////////////////////////////////////////////
-
+// autoit.js
+// AutoIt (AutoIt3, AutoItX) API interface for WelsonJS framework
+// Namhyeon Go (Catswords Research) <abuse@catswords.net>
+// https://github.com/gnh1201/welsonjs
 function AutoItObject() {
-    this.interface = null;
+    this._interface = null;
 
     this.create = function() {
         try {
-            this.interface = CreateObject("AutoItX3.Control");
+            this._interface = CreateObject("AutoItX3.Control");
         } catch (e) {
             console.error("AutoIt_CreateObject() ->", e.message);
         }
@@ -37,10 +37,10 @@ function AutoItObject() {
     this.callFunction = function(functionName, args) {
         console.log("Calling AutoItX function...", functionName);
 
-        if (this.interface != null) {
+        if (this._interface != null) {
             try {
-                //this.interface[functionName].apply(null, args);
-                eval("this.interface." + functionName + "(\"" + args.map(addslashes).join("\", \"") + "\")");
+                //this._interface[functionName].apply(null, args);
+                eval("this._interface." + functionName + "(\"" + args.map(addslashes).join("\", \"") + "\")");
                 sleep(300);
             } catch (e) {
                 console.error("AutoItObject.callFunction() ->", e.message);
@@ -55,4 +55,8 @@ function AutoItObject() {
 
 exports.create = function() {
     return new AutoItObject();
-};
\ No newline at end of file
+};
+
+exports.VERSIONINFO = "AutoIt API interface version 0.1.3";
+exports.global = global;
+exports.require = global.require;
diff --git a/lib/chrome.js b/lib/chrome.js
index f6848f8..f432183 100644
--- a/lib/chrome.js
+++ b/lib/chrome.js
@@ -1,6 +1,6 @@
 // chrome.js
+// Chrome Web Browser Debugging Interface for WelsonJS framework
 // Namhyeon Go <abuse@catswords.net>
-// This code is part of WelsonJS framework
 // https://github.com/gnh1201/welsonjs
 
 var STD = require("lib/std");
@@ -17,10 +17,9 @@ var ExtraMath = require("lib/extramath");
 // for remote debugging
 var pageEventId = 0;
 
-var ChromeObject = function(interfaces) {
+var ChromeObject = function() {
     STD.EventTarget.apply(this, arguments);  // Set event-attachable object
 
-    this.interfaces = (typeof interfaces !== "undefined" ? interfaces : []);
     this.vendor = "Chrome";
     this.workingDirectory = SYS.getEnvString("PROGRAMFILES") + "\\Google\\:installedDir\\Application";
     this.binPath = SYS.getEnvString("PROGRAMFILES") + "\\Google\\:installedDir\\Application\\chrome.exe";
@@ -1406,7 +1405,7 @@ exports.startDebugInPrivate = function(url, proxy, profileName, debuggingPort, i
     ;
 };
 
-exports.VERSIONINFO = "Chrome Web Browser Debugging Interface (chrome.js) version 0.4.8";
+exports.VERSIONINFO = "Chrome Web Browser Debugging Interface (chrome.js) version 0.4.9";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/http.js b/lib/http.js
index c6f3112..0ad245b 100644
--- a/lib/http.js
+++ b/lib/http.js
@@ -1,4 +1,5 @@
 // http.js
+// HTTP client module for WelsonJS framework
 // Namhyeon Go <abuse@catswords.net>
 // https://github.com/gnh1201/welsonjs
 var SYS = require("lib/system");
@@ -16,7 +17,8 @@ var PROCESS_VERSION = SYS.getProcessVersion();
 var DEFAULT_USER_AGENT = "WelsonJS/0.2.7 (" + OS_NAME + "; " + OS_ARCH + "; " + PROCESS_VERSION + "; " + DEVICE_UUID + "; abuse@catswords.net)";
 
 var HTTPObject = function(engine) {
-    this.interface = null;
+    this._interface = null;
+
     this.contentType = "application/x-www-form-urlencoded";
     this.requestBody = "";
     this.responseBody = null;
@@ -36,7 +38,7 @@ var HTTPObject = function(engine) {
     this.engine = (typeof(engine) !== "undefined" ? engine : "MSXML");
 
     this.cookie = null;
-    this.storedCookie = PipeIPC.create("volatile");
+    this.storedCookie = PipeIPC.connect("volatile");
     this.states = [];
     this.variables = {
         "uuidv4": RAND.uuidv4,
@@ -78,7 +80,7 @@ var HTTPObject = function(engine) {
 
     this.create = function() {
         if (this.engine == "MSXML") {
-            this.interface = CreateObject([
+            this._interface = typeof XMLHttpRequest !== "undefined" ? new XMLHttpRequest() : CreateObject([
                 "Microsoft.XMLHTTP",
                 "WinHttp.WinHttpRequest.5.1",
                 "Msxml3.XMLHTTP",
@@ -96,9 +98,13 @@ var HTTPObject = function(engine) {
                 "Msxml2.ServerXMLHTTP.3.0"
             ]);
         } else if (this.engine == "CURL") {
-            this.interface = SHELL.create();
-            this.interface.setPrefix("bin\\curl");   // the location of cURL binary
+            this._interface = SHELL.create();
+            this._interface.setPrefix("bin\\curl.exe");   // the location of cURL binary
+        } else if (this.engine == "BITS") {
+            this._interface = SHELL.create();
+            this._interface.setPrefix("bitsadmin.exe");   // the location of BITS binary
         }
+
         return this;
     };
 
@@ -152,11 +158,8 @@ var HTTPObject = function(engine) {
     };
 
     this.setEngine = function(engine) {
-        if (typeof(engine) == "string") {
-            this.engine = engine.toUpperCase();
-        } else {
-            this.engine = engine;
-        }
+        this.engine = String(engine).toUpperCase();
+        this.create();
         return this;
     };
 
@@ -233,7 +236,7 @@ var HTTPObject = function(engine) {
 
     this.getHeader = function(key) {
         try {
-            return this.interface.getResponseHeader(key);
+            return this._interface.getResponseHeader(key);
         } catch (e) {
             console.error("HTTPObject.getHeader() -> ", e.message);
         }
@@ -241,7 +244,7 @@ var HTTPObject = function(engine) {
 
     this.getHeaders = function() {
         try {
-            var raw = this.interface.getAllResponseHeaders();
+            var raw = this._interface.getAllResponseHeaders();
 
             return raw.split(/[\r\n]+/).filter(function(s) {
                 return s.trim().length > 0;
@@ -372,11 +375,11 @@ var HTTPObject = function(engine) {
                 // Open
                 switch (this.method) {
                     case "POST":
-                        this.interface.open(method, url, this.isAsynchronous);
+                        this._interface.open(method, url, this.isAsynchronous);
                         break;
 
                     case "GET":
-                        this.interface.open(method, url, this.isAsynchronous);
+                        this._interface.open(method, url, this.isAsynchronous);
                         break;
 
                     default:
@@ -429,28 +432,28 @@ var HTTPObject = function(engine) {
         try {
             if (this.engine == "MSXML") {
                 for (var key in this.headers) {
-                    this.interface.setRequestHeader(key, this.evaluate(this.headers[key]));
+                    this._interface.setRequestHeader(key, this.evaluate(this.headers[key]));
                 }
 
                 switch (this.method) {
                     case "GET":
-                        this.interface.send();
+                        this._interface.send();
                         break;
 
                     default:
-                        this.interface.send(this.serialize());
+                        this._interface.send(this.serialize());
                 }
 
                 // Waiting a response
-                while (this.interface.readyState < 4) sleep(100);
+                while (this._interface.readyState < 4) sleep(100);
 
                 // Get response text
-                responseText = this.interface.responseText;
+                responseText = this._interface.responseText;
             } else if (this.engine == "CURL") {
                 if (this.states.length > 0) {
                     // Make CURL context
                     var state = this.states[this.states.length - 1];
-                    var cmd = [];
+                    var cmd = ["bin\\curl"];
                     var url = state.url;
 
                     if (this.isDebugging) {
@@ -567,7 +570,7 @@ var HTTPObject = function(engine) {
                     cmd.push(state.url);
 
                     // Get response text
-                    responseText = this.interface.setCharset(this.charset).exec(cmd);
+                    responseText = this._interface.setCharset(this.charset).exec(cmd);
 
                     // Reload a cookie in the pipe
                     if (this.isLoggingCookie) {
@@ -587,7 +590,26 @@ var HTTPObject = function(engine) {
                     }
 
                     // Get debuging text
-                    debuggingText = this.interface.stderr.read();
+                    debuggingText = this._interface.stderr.read();
+                }
+            } else if (this.engine == "BITS") {
+                var job_name = "welsonjs_" + PipeIPC.UUIDv4.create().substring(0, 8);
+                var job_priority = "normal";
+                var state = this.states[this.states.length - 1];
+                var cmd = ["/transfer", job_name];
+                var url = state.url;
+                var out = PipeIPC.connect("volatile");
+
+                if (this.method == "GET") {
+                    cmd = cmd.concat(["/download", "/priority", job_priority, url, SYS.getCurrentScriptDirectory() + "\\" + out.path]);   // build a BITS command
+                    this._interface.exec(cmd);   // launch the download job
+                    out.reload();    // read the downloaded data
+                    responseText = out.read()    // set the downloaded data to response text
+
+                    var err = this._interface.exec(["/geterror", job_name]);    // get error information
+                    debuggingText = err.stdout.read();   // set the error information to debugging text
+
+                    out.destroy();   // destroy the downloaded data
                 }
             }
 
@@ -1049,7 +1071,7 @@ exports.parseURL = parseURL;
 exports.DEFAULT_USER_AGENT = DEFAULT_USER_AGENT;
 exports.defaultUserAgent = DEFAULT_USER_AGENT;    // compatible with the specific case
 
-exports.VERSIONINFO = "HTTP request module (http.js) version 0.7.19";
+exports.VERSIONINFO = "HTTP client module (http.js) version 0.7.22";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/pipe-ipc.js b/lib/pipe-ipc.js
index 957d3d7..7fa50c8 100644
--- a/lib/pipe-ipc.js
+++ b/lib/pipe-ipc.js
@@ -1,6 +1,7 @@
 // pipe-ipc.js
+// Pipe based IPC implementation for WelsonJS framework
+// Namhyeon Go (Catswords Research) <abuse@catswords.net>
 // https://github.com/gnh1201/welsonjs
-
 var STD = require("lib/std");
 
 // https://learn.microsoft.com/en-us/office/vba/language/reference/user-interface-help/opentextfile-method
@@ -437,7 +438,7 @@ function PipeIPC() {
     };
 
     // Fixed bug: broken GUI sample #86, Reported by @eogloblin, in 2023-10-26
-    // Reference #1: https://gist.github.com/antic183/619f42b559b78028d1fe9e7ae8a1352d
+    // https://gist.github.com/antic183/619f42b559b78028d1fe9e7ae8a1352d
     this._read = function(fh) {
         try {
             return (function(s) {
diff --git a/lib/powershell.js b/lib/powershell.js
index 5efafca..faf2052 100644
--- a/lib/powershell.js
+++ b/lib/powershell.js
@@ -1,10 +1,11 @@
-////////////////////////////////////////////////////////////////////////
 // Powershell Interface API
-///////////////////////////////////////////////////////////////////////
-
+// Namhyeon Go (Catswords Research) <abuse@catswords.net>
+// https://github.com/gnh1201/welsonjs
 var SHELL = require("lib/shell");
 
 var PowershellObject = function() {
+    var _interface = SHELL.create();
+
     this.execType = "ps1";
     this.dataType = -1;
     this.target = null;
@@ -75,7 +76,6 @@ var PowershellObject = function() {
         }
 
         var cmd = [
-            "powershell.exe",
             "-NoProfile",
             "-ExecutionPolicy",
             "ByPass",
@@ -117,12 +117,15 @@ var PowershellObject = function() {
     };
 
     this.exec = function(args) {
-        return SHELL.exec(this.build(args));
+        return _interface.exec(this.build(args));
     };
 
     this.runAs = function(args) {
         return this.exec("Start-Process cmd \"/q /c " + SHELL.addslashes(this.build(args)) + "\" -Verb RunAs");
     };
+
+    // set the location of PowerShell runtime
+    _interface.setPrefix("powershell.exe");
 }
 
 function create() {
@@ -145,7 +148,7 @@ exports.execScript = execScript;
 exports.execCommand = execCommand;
 exports.runAs = runAs;
 
-exports.VERSIONINFO = "Powershell Interface (powershell.js) version 0.1.3";
+exports.VERSIONINFO = "Powershell Interface (powershell.js) version 0.1.4";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/shell.js b/lib/shell.js
index ec9e4db..bfb76aa 100644
--- a/lib/shell.js
+++ b/lib/shell.js
@@ -1,11 +1,11 @@
-////////////////////////////////////////////////////////////////////////
-// Shell API with PIPE-IPC
-////////////////////////////////////////////////////////////////////////
+// Windows Shell Interface with WelsonJS Pipe-IPC module
+// Namhyeon Go (Catswords Research) <abuse@catswords.net>
+// https://github.com/gnh1201/welsonjs
 var FILE = require("lib/file");
 var PipeIPC = require("lib/pipe-ipc");
 
 var ShellObject = function() {
-    this.interface = null;
+    this._interface = null;
 
     this.currentDirectory = null;
     this.workingDirectory = null;
@@ -20,8 +20,8 @@ var ShellObject = function() {
 
     this.create = function() {
         try {
-            this.interface = CreateObject("WScript.Shell");
-            this.currentDirectory = this.interface.CurrentDirectory;
+            this._interface = CreateObject("WScript.Shell");
+            this.currentDirectory = this._interface.CurrentDirectory;
             this.workingDirectory = this.currentDirectory;
         } catch (e) {
             console.error("ShellObject.create() ->", e.message);
@@ -31,6 +31,7 @@ var ShellObject = function() {
 
     this.setPrefix = function(prefix) {
         this.prefix = prefix;
+        return this;
     };
 
     this.setCharset = function(charset) {
@@ -41,7 +42,7 @@ var ShellObject = function() {
     this.setWorkingDirectory = function(dirname) {
         if (typeof(dirname) === "string") {
             this.workingDirectory = dirname;
-            this.interface.CurrentDirectory = this.workingDirectory;
+            this._interface.CurrentDirectory = this.workingDirectory;
             console.log("ShellObject.workingDirectory ->", this.workingDirectory);
         }
         return this;
@@ -54,7 +55,7 @@ var ShellObject = function() {
 
     this.build = function(cmd) {
         var wrap = function(s) {
-            return this.target != null ? [this.target, s].join(' ') : s;
+            return this.prefix != null ? [this.prefix, s].join(' ') : s;
         };
 
         if (typeof(cmd) === "string") {
@@ -78,7 +79,7 @@ var ShellObject = function() {
         try {
             var c = this.build(cmd);
             console.log("ShellObject.createProcess() ->", c);
-            return this.interface.Exec(c);
+            return this._interface.Exec(c);
         } catch (e) {
             console.error("ShellObject.createProcess() ->", e.message);
         }
@@ -101,7 +102,7 @@ var ShellObject = function() {
         var c = "%comspec% /c (" + this.build(cmd) + ") 1> " + this.stdout.path;
         //c += " 2>&1";
         c += " 2> " + this.stderr.path;
-        this.interface.Run(c, 0, true);
+        this._interface.Run(c, 0, true);
         console.log("ShellObject.exec() ->", c);
         sleep(1);
 
@@ -126,7 +127,7 @@ var ShellObject = function() {
         var fork = (typeof(fork) !== "undefined") ? fork : true;
         var c = "%comspec% /q /c (" + this.build(cmd) + ")";
         console.log("ShellObject.run() ->", c);
-        this.interface.Run(c, (!this.isVisibleWindow ? 0 : 1), !fork);
+        this._interface.Run(c, (!this.isVisibleWindow ? 0 : 1), !fork);
     };
 
     this.runAs = function(FN, args) {
@@ -141,11 +142,11 @@ var ShellObject = function() {
     };
 
     this.createShoutcut = function(shoutcutName, cmd) {
-        var desktopPath = this.interface.SpecialFolders("Desktop");
+        var desktopPath = this._interface.SpecialFolders("Desktop");
         var path = desktopPath + "\\" + shoutcutName + ".lnk";
 
         if (!FILE.fileExists(path)) {
-            var link = this.interface.CreateShortcut(path);
+            var link = this._interface.CreateShortcut(path);
             //link.TargetPath = "cmd";
             //link.Arguments = "/q /c " + this.build(cmd);
             link.TargetPath = "wscript";
@@ -160,13 +161,13 @@ var ShellObject = function() {
     };
 
     this.getPathOfMyDocuments = function() {
-        return this.interface.SpecialFolders("MyDocuments");
+        return this._interface.SpecialFolders("MyDocuments");
     };
 
     this.release = function() {
         console.log("ShellObject.release() ->", this.currentDirectory);
-        this.interface.CurrentDirectory = this.currentDirectory;
-        this.interface = null;
+        this._interface.CurrentDirectory = this.currentDirectory;
+        this._interface = null;
     };
 
     this.create();
@@ -220,7 +221,7 @@ exports.getPathOfMyDocuments = function() {
 
 exports.CdoCharset = PipeIPC.CdoCharset;
 
-exports.VERSIONINFO = "Shell interface (shell.js) version 0.3.9";
+exports.VERSIONINFO = "Windows Shell Interface (shell.js) version 0.3.12";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/toolkit.js b/lib/toolkit.js
index d6f8f2c..8cdcd14 100644
--- a/lib/toolkit.js
+++ b/lib/toolkit.js
@@ -1,13 +1,14 @@
 // toolkit.js
+// WelsonJS native component interface for WelsonJS framework
 // Namhyeon Go <abuse@catswords.net>
 // https://github.com/gnh1201/welsonjs
 
 function ToolkitObject() {
-    this.interface = null;
+    this._interface = null;
 
     this.create = function() {
         try {
-            this.interface = CreateObject("WelsonJS.Toolkit");
+            this._interface = CreateObject("WelsonJS.Toolkit");
         } catch (e) {
             console.info("WelsonJS.Toolkit not installed");
             console.info("It could be download from https://github.com/gnh1201/welsonjs");
@@ -17,7 +18,7 @@ function ToolkitObject() {
     };
 
     this.getInterface = function() {
-        return this.interface;
+        return this._interface;
     };
 
     this.create();
@@ -114,7 +115,7 @@ exports.closeProcess = closeProcess;
 exports.encryptStringHIGHT = encryptStringHIGHT;
 exports.decryptStringHIGHT = decryptStringHIGHT;
 
-exports.VERSIONINFO = "WelsonJS native component (WelsonJS.Toolkit) version 0.3.5";
+exports.VERSIONINFO = "WelsonJS native component interface (WelsonJS.Toolkit) version 0.3.6";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;
diff --git a/lib/wmi.js b/lib/wmi.js
index 1f09847..d986465 100644
--- a/lib/wmi.js
+++ b/lib/wmi.js
@@ -1,24 +1,24 @@
-////////////////////////////////////////////////////////////////////////
-// WMI(Windows Management Instrumentation) API
-////////////////////////////////////////////////////////////////////////
-
+// wmi.js
+// WMI(Windows Management Instrumentation) API interface for WelsonJS framework
+// Namhyeon Go (Catswords Research) <abuse@catswords.net>
+// https://github.com/gnh1201/welsonjs
 var WMIQueryObject = function() {
     var wbemFlagReturnImmediately = 0x10;
     var wbemFlagForwardOnly = 0x20;
 
     this.computer = ".";
     this.namespace = "root\\cimv2";
-    this.interface = null;
+    this._interface = null;
     this.cursor = {};
     this.current = {};
 
     this.create = function() {
         try {
             if (typeof(GetObject) === "function") {
-                this.interface = GetObject("winmgmts:{impersonationLevel=impersonate}!\\\\" + this.computer + "\\" + this.namespace);
+                this._interface = GetObject("winmgmts:{impersonationLevel=impersonate}!\\\\" + this.computer + "\\" + this.namespace);
             } else {
                 var objLocator = CreateObject("WbemScripting.SWbemLocator");
-                this.interface = objLocator.ConnectServer(this.computer, this.namespace);
+                this._interface = objLocator.ConnectServer(this.computer, this.namespace);
             }
         } catch (e) {
             console.error(e.message);
@@ -38,7 +38,7 @@ var WMIQueryObject = function() {
 
     this.execQuery = function(query) {
         try {
-            var result = this.interface.ExecQuery(query, "WQL", wbemFlagReturnImmediately | wbemFlagForwardOnly);
+            var result = this._interface.ExecQuery(query, "WQL", wbemFlagReturnImmediately | wbemFlagForwardOnly);
             this.cursor = new Enumerator(result);
         } catch (e) {
             console.error(e.message);
@@ -70,7 +70,7 @@ var WMIQueryObject = function() {
 };
 
 var WMIClassObject = function() {
-    this.interface = (new WMIQueryObject()).interface;
+    this._interface = (new WMIQueryObject()).interface;
     this.classObject = null;
     this.className = "";
     this.instance = null;
@@ -82,7 +82,7 @@ var WMIClassObject = function() {
     // Instance
     this.setClass = function(className) {
         this.className = className;
-        this.classObject = this.interface.Get(className);
+        this.classObject = this._interface.Get(className);
         return this;
     };
 
diff --git a/start.bat b/start.bat
deleted file mode 100644
index 8a9ee90..0000000
--- a/start.bat
+++ /dev/null
@@ -1,3 +0,0 @@
-@echo off
-pushd "%~dp0"
-cscript app.js bootstrap
diff --git a/testloader.js b/testloader.js
index 0f1578a..e9c0026 100644
--- a/testloader.js
+++ b/testloader.js
@@ -420,6 +420,13 @@ var test_implements = {
         console.log("응답 시간: " + SYS.ping("1.1.1.1") + "ms");
     },
 
+    "network_bitsadmin_test": function() {
+        var HTTP = require("lib/http");
+        var bits = HTTP.create("BITS");
+        var response = bits.open("GET", "https://httpbin.org/get").send().responseText;
+        console.log(response);
+    },
+
     "extramath_dtm": function() {
         var ExtraMath = require("lib/extramath");
         
@@ -991,7 +998,7 @@ var test_implements = {
 };
 
 function main(args) {
-    // EXAMPLE: cscript app.js testloader <es5_polyfills> <data\test-oss-20231030.json>
+    // EXAMPLE: cscript app.js testloader <es5_polyfills> <data\test-oss-korea-2023.json>
     if (args.length > 0) {
         var test_id = args[0];
         var profilefile = args[1];