diff --git a/README.md b/README.md
index 66879cb..af64f0f 100644
--- a/README.md
+++ b/README.md
@@ -2,26 +2,23 @@
 
 ## Overview
 
-Pygame GUI library, named after the creator of Python, Guido van Rossum, believing that this library will be the first to implement a GUI completely compatible with pygame. Included is a "mini-OS" to show off all the elements. That "mini-OS" is called *Winnux 58* (**Win**dows 9**5** + **Win**dows 9**8** + Li**nux**).
-
-~~i kinda hate this name now~~
+Pygame GUI library, named after the creator of Python, Guido van Rossum, believing that this library will be the first to implement a GUI library completely compatible with pygame. Included is a "mini-OS" to show off all the elements. It's called *Winnux 58* (**Win**dows 9**5** + **Win**dows 9**8** + Li**nux**).
 
 ## Features
 
--   A working command line, with these *nix-style commands*:
+-   A working command line, with these \*nix-style commands:
     -   `pwd`: print working directory
-    -   `ls`: list file and directories
+    -   `cat`: show contents of file(s)
+    -   `ls`: list files and directories
     -   `rm`: remove file(s)
     -   `cd`: change directory
 -   A command-line text editor, `vis`
 -   SNAKE! (with an incredibly high framerate soo good luck with that)
 -   A virtual disk to put programs in
 
-Please check our [wiki](https://github.com/The-UltimateGamer/GUIdo/wiki) for more details.
-
-## NEVER TRY TO MOUNT `files.img`
+Please check our [wiki](https://github.com/The-UltimateGamer/GUIdo/wiki) for more details. There is also an offline version in the `wiki` folder of this repository.
 
-## Directory structure:
+## Directory Structure
 - `/home/`
 
     - test.txt
@@ -32,11 +29,10 @@ Please check our [wiki](https://github.com/The-UltimateGamer/GUIdo/wiki) for mor
     - kernel.py
     (This is where our OS boots. **DO NOT TRY TO DELETE IT.**)
 
-## License Notice
+## License Agreement
 
 Winnux 58 is brought to you under the [GNU AGPL-3.0 License](https://www.gnu.org/licenses/agpl-3.0.en.html).
 
-OS emulator using pygame.
 Copyright (C) 2020 The-UltimateGamer & pythonleo
 
 This program is free software: you can redistribute it and/or modify
diff --git a/README.pdf b/README.pdf
index 2b72003..b4f80f1 100644
Binary files a/README.pdf and b/README.pdf differ
diff --git a/README_zh_CN.md b/README_zh_CN.md
new file mode 100644
index 0000000..0c038b0
--- /dev/null
+++ b/README_zh_CN.md
@@ -0,0 +1,57 @@
+# GUIdo
+
+## 概览
+
+使用 pygame 的 GUI 库，名字取自 Python 的创始人，Guido van Rossum。我们相信这将会是第一个与 pygame 无缝衔接的 GUI 库。此项目包含一个”迷你操作系统“，名叫 *Winnux 58*（**Win**dows 9**5** + **Win**dows 9**8** + Li**nux**）。
+
+## 功能
+
+-   一个命令行，具有基本 \*nix 风格的指令：
+    
+    -   `pwd`：显示当前工作目录
+    
+    -   `cat`：显示一个或多个文件的内容
+    
+    -   `ls`：列出当前目录下的子目录与文件
+    
+    -   `rm`：删除一个或多个文件
+    
+    -   `cd`：改变当前目录
+-   命令行编辑器 `vis`
+-   贪 吃 蛇（帧率特高，祝你好运）
+-   用于存储程序的虚拟磁盘
+
+想了解更多细节，请查阅我们的 [wiki](https://github.com/The-UltimateGamer/GUIdo/wiki)。同时，本仓库的 `wiki` 目录下有离线版本。
+
+## 文件目录
+
+-   `/home/`
+
+    -   test.txt
+
+        （为了测试 `cat` 指令的实例文档）
+
+-   `/sys/`
+
+    -   kernel.py
+
+        （操作系统的核心。**请不要删除它**。）
+
+## 软件许可协议
+
+Winnux 58 使用 [GNU Affero 通用公共许可证版本 3.0](https://www.gnu.org/licenses/agpl-3.0.en.html)，请遵循其中的条款。
+
+Copyright (C) 2020 The-UltimateGamer & pythonleo
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
\ No newline at end of file
diff --git a/README_zh_CN.pdf b/README_zh_CN.pdf
new file mode 100644
index 0000000..cce17e7
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diff --git a/files.img b/files.img
index 7f5cc48..a8af33c 100644
--- a/files.img
+++ b/files.img
@@ -12,10 +12,10 @@ from enum import Enum
 
 width, height = 1024, 768
 
-def pwd(working_dir, args):
+def pwd(working_dir, args = None):
 	print(working_dir, end='\r')
 
-def ls(working_dir, args, flag=True):
+def ls(working_dir, args = None, flag = True):
 	files = open("files.img", 'r+', encoding="ISO-8859-1")
 	lines = files.read().strip('\0').split('\n')
 
@@ -26,9 +26,9 @@ def ls(working_dir, args, flag=True):
 			result.append(lines[i + 1].strip('!FNAME='))
 	return result
 
-def cat(working_dir, args):
+def cat(working_dir, args = None):
 	if not args:
-		print("Missing argument.\rUsage: cat <filename(s)>", end='\r')
+		print("cat: missing argument.\rUsage: cat <filename(s)>", end='\r')
 		return
 	for target in args:
 		files = open("files.img", 'r+', encoding="ISO-8859-1")
@@ -42,11 +42,14 @@ def cat(working_dir, args):
 						contents.append(lines[i])
 					break
 		else:
-			print("cat: %s: no such file" % target, end = '\r')
-		print('\r'.join(contents))
+			print("cat: %s: no such file." % target, end = '\r')
+		print('\r'.join(contents), end='\r')
 		files.close()
 
-def rm(working_dir, args):
+def rm(working_dir, args = None):
+	if not args:
+		print("rm: missing argument.\rUsage: rm <filename(s)>", end='\r')
+		return
 	files = open("files.img", 'r+', encoding="ISO-8859-1")
 	to_be_written = []
 	target = args[0]
@@ -123,7 +126,6 @@ class Kernel:
 			self.dialogs[self.dialogID].mouseDown(pos, button)
 		except:
 			pass
-		print(event.pos)
 	def mouseUp(self, pos, button):
 		self.apps[self.appID].mouseUp(pos, button)
 	def mouseMotion(self, pos):
@@ -270,7 +272,6 @@ class TxtField:
 
 	def wrap(self, txtBuffer):
 		self.frame += 1
-		self.frame %= 60
 		lines = []
 		ptr = 0
 		prev_i = 0
@@ -304,7 +305,7 @@ class TxtField:
 			screen.blit(img, (self.x, y))
 			y += 16
 
-		if self.frame <= 30: self.cursor.image.fill(pygame.Color(252, 252, 252))
+		if self.frame % 50 <= 25: self.cursor.image.fill(pygame.Color(252, 252, 252))
 		else: self.cursor.image.fill(pygame.Color(0, 0, 0))
 
 		lines = self.txtBuffer.count('\r') + self.txtBuffer.count('\n')
@@ -313,7 +314,7 @@ class TxtField:
 		self.cursor.rect.center = (self.x + (self.loc + (len(self.pwd) if not self.isVis else -2) + 1) * 9 + 8,
 								   self.y + lines * 16 + 8)
 		screen.blit(self.cursor.image, self.cursor.rect)
-	def cd(self, dir_name):
+	def cd(self, dir_name = None):
 		def process_dir(dr: str):
 			for d in dr.split('/'):
 				if d:
@@ -343,7 +344,7 @@ class TxtField:
 			self.pwd = '/'
 			dir_name = dir_name[1:]
 		process_dir(dir_name)
-	def vis(self, args):
+	def vis(self, args = None):
 		self.isVis = True
 		if not args:
 			print("vis: missing argument.\rUsage: vis <filename>", end='\r')
@@ -364,11 +365,11 @@ class TxtField:
 			for event in pygame.event.get():
 				if event.type == pygame.KEYDOWN:
 					if event.key == pygame.K_ESCAPE:
+						self.loc = 0
 						flg = False
 						break
 					self.keyDown(event.key, True)
 					files.write(self.cLineStr)
-					framework.launch()
 				elif event.type == pygame.KEYUP:
 					if event.key in (pygame.K_LSHIFT, pygame.K_RSHIFT):
 						self.shift = False
@@ -377,8 +378,7 @@ class TxtField:
 				elif event.type == pygame.QUIT:
 					pygame.quit()
 					sys.exit()
-				framework.launch()
-			self.frame += 1
+			framework.launch()
 		files.close()
 		self.isVis = False
 
@@ -389,15 +389,18 @@ class TxtField:
 		output = io.StringIO()
 		with redirect_stdout(output):
 			if main:
-				if main == 'cd': self.cd(cmd[0])
-				elif main == 'vis': self.vis(cmd[0])
+				if main == "cd":
+					try: self.cd(cmd[0])
+					except: print("cd: missing argument.\rUsage: cd <dirname>", end='\r')
+				elif main == "vis":
+					try: self.vis(cmd[0])
+					except: print("vis: missing argument.\rUsage: vis <filename>", end='\r')
 				else: 
 					try: exec("%s('%s', %s)" % (main, self.pwd, str(cmd)))
-					except: print("%s: command not found" % on_scr, end='')
+					except: print("%s: command not found" % on_scr, end='\r')
 			else: pass
 		self.txtBuffer.append('\r')
 		self.txtBuffer += list(output.getvalue().rstrip('\n'))
-		print(output.getvalue())
 		self.placeholder.append('%s# ' % self.pwd)
 	def keyUp(self, key):
 		if key == pygame.K_LSHIFT or key == pygame.K_RSHIFT:
@@ -440,7 +443,6 @@ class TxtField:
 			else:
 				self.exec_cmd(cmd)
 				self.txtBuffer.append('\n')
-			framework.launch()
 		elif key == pygame.K_TAB:
 			for _ in range(4):
 				self.txtBuffer.append(' ')
@@ -463,10 +465,8 @@ class TxtField:
 					self.txtBuffer.insert(self.loc + self.currentLine, self.caps[chr(key)])
 				else:
 					self.txtBuffer.insert(self.loc + self.currentLine, chr(key))
-			self.loc += 1
-			self.maxIndex += 1
-
-		framework.launch()
+				self.loc += 1
+				self.maxIndex += 1
 
 class Secret:
 	def __init__(self, rect, dialogID):
@@ -609,4 +609,4 @@ If you're seeing this, then the `cat` command is working!
 !FNAME=sys/
 
 !LOC=/
-!FNAME=home/
+!FNAME=home/
\ No newline at end of file
diff --git a/stub.py b/stub.py
index 7a16018..3d660a1 100644
--- a/stub.py
+++ b/stub.py
@@ -43,6 +43,7 @@
 				kernel.append(dsk_spl[j])
 			break
 
-	exec('\n'.join(kernel))
+	try: exec('\n'.join(kernel))
+	except: pass
 
 img.close()
\ No newline at end of file
diff --git a/wiki/FAQ.md b/wiki/FAQ.md
index d67312b..a28c6f3 100644
--- a/wiki/FAQ.md
+++ b/wiki/FAQ.md
@@ -1,4 +1,7 @@
+# FAQ
+
 ## What do I need?
+
 You will need:
 - A working Python interpreter, version 3 and up
 - The [pygame module](pygame.org) installed
@@ -8,13 +11,9 @@ Run `stub.py` either by double-clicking on it (in Windows) or using the command
 
 ## FAQ for `vis`
 ### How do I use `vis`?
-When you open it up through the virtual terminal, you will be put in *input mode*, which means whatever you type will be written into the file. `vis` is a *line-based* editor, meaning you can only edit the line you're on.<br>
-Enter `vis <filename>` to start editing a file. Press Enter whenever you have finished editing a line. The line will be immediately saved and cannot be altered again in this editing session. Press Esc to exit `vis`.
+When you open it up through the virtual terminal, you will be put in *input mode*, which means whatever you type will be written into the file. `vis` is a *line-based* editor, meaning you can only edit the line you're on.  
 
-### Where do the files go?
-Everything you created in Winnux 58 will go into the `files.img` *virtual disk*. You can view them using the `cat` command in the virtual terminal. Note that `files.img` is NOT a traditional disk image, so don't try to mount that!
+Enter `vis <filename>` to start editing a file. Press <kbd>Enter</kbd> whenever you have finished editing a line. The line will be immediately saved and cannot be altered again in this editing session. Press <kbd>Esc</kbd> to exit `vis`.
 
-## Known issues
-<ul>
-	<li>The cursor behaves strangely in vis. It does not update regularly anymore, but rather updates at every event.</li>
-</ul>
+### Where do the files go?
+Everything you created in Winnux 58 will go into the `files.img` *virtual disk*. You can view them using the `cat` command in the virtual terminal. Note that `files.img` is **NOT** a traditional disk image, so don't try to mount that!
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diff --git a/wiki/FAQ.pdf b/wiki/FAQ.pdf
index d22410c..a062b95 100644
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diff --git a/wiki/FAQ_zh_CN.md b/wiki/FAQ_zh_CN.md
new file mode 100644
index 0000000..e03c2cc
--- /dev/null
+++ b/wiki/FAQ_zh_CN.md
@@ -0,0 +1,24 @@
+# FAQ
+
+## 我需要什么？
+
+您将会需要：
+
+-   一个 Python 解释器，版本 3 及以上
+-   [pygame](pygame.org) 模块
+
+## 我如何运行此程序？
+
+运行 `stub.py`。您可以使用命令行或者（在 Windows 系统下）双击文件。
+
+## `vis` 程序 FAQ
+
+### 我如何使用 `vis`？
+
+当您打开 `vis` 时，您会进入*输入模式*，这代表您所输入的全部内容将会写入文件。`vis` 是一个*行编辑器*，这代表着您只能更改当前行的内容（后文将加以解释）。
+
+使用 `vis <文件名>` 来开始输入文本。当您完成输入一行文字时，请按 <kbd>Enter</kbd> 键。这行文本将会被直接保存且您不能再修改它。要退出 `vis`，请按 <kbd>Esc</kbd> 键。
+
+### 我的文件被存到了哪里？
+
+您在 Winnux 58 中创建的所有内容都储存在 `files.img` *虚拟磁盘*里。您可以在虚拟命令行中使用 `cat` 命令查看文件内容。要注意的是，`files.img` **并不是**传统的磁盘映像，所以请勿装载它！
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