diff --git a/README.md b/README.md
index f6a5e1e..15c6a36 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,29 @@
 # Clochur
 A Scheme-like typesetting LISP interpreter and editor that using SILE typesetting Engine.
 
-== Packaging ==
 
-To make a wheel package, run:
+## Dependencies
+* PyQt5>=5.15
+* QScintilla>=2.12
+* SILE>=0.10
 
-  python setup.py bdist_wheel
+## Install
+It's recommended to install the wheel file (.whl) of it with pip3:
+
+  `pip3 install Clochur-x.y.z-py3-none-any.whl`
+
+## Manual
+
+see `src/example.pdf`
+
+## Packaging
+
+To make a wheel package, run the following command in the root folder:
+
+  `python setup.py bdist_wheel`
 
 and then:
 
-  cd dist
-  pip3 install Clochur-x.y.z-py3-none-any.whl
+  `cd dist; ls`
+
+`Clochur-x.y.z-py3-none-any.whl` will in it.
diff --git a/src/Editor/__init__.py b/src/Editor/__init__.py
index da6e61a..3c64b30 100755
--- a/src/Editor/__init__.py
+++ b/src/Editor/__init__.py
@@ -19,7 +19,7 @@ from Editor import qrc_resources
 from Editor import __about__
 from Editor import FindReplace
 from Editor.Interpreter import Interpreter, Lambda
-from Editor import CustomQsciEditor
+from Editorimport CustomQsciEditor
 from Editor.Parser import Parser
 
 
@@ -27,7 +27,7 @@ sile_command = 'sile'
 
 dirname = os.path.abspath(os.path.dirname(__file__)) #os.path.dirname('__file__')
 PDFJS = os.path.join(dirname, '../thirdparty/pdfjs/web/viewer.html')
-PDF = os.path.join(dirname, 'example.pdf')
+PDF = os.path.join(os.path.dirname(dirname), 'example.pdf')
 
 app = None
 
diff --git a/src/example.pdf b/src/example.pdf
new file mode 100644
index 0000000..cd43dc3
Binary files /dev/null and b/src/example.pdf differ