diff --git a/doc/README.ja.md b/README.ja.md
similarity index 94%
rename from doc/README.ja.md
rename to README.ja.md
index e2171c6..1798bc9 100644
--- a/doc/README.ja.md
+++ b/README.ja.md
@@ -1,4 +1,6 @@
 # StackShot3X API for Python
+[**English**](./README.md)
+
 StackShot3Xを操作するためのPython用API
 
 
@@ -133,3 +135,7 @@ StackShot3Xに対する挙動を表す列挙型
 ## class RailUnits
 
 レールを動かす距離の単位を表す列挙型
+
+
+# 謝辞
+本ソフトウエアは 日本学術振興会 科学研究費 基盤研究B 22H03710の助成を受けて開発されました。
\ No newline at end of file
diff --git a/doc/README.en.md b/README.md
similarity index 82%
rename from doc/README.en.md
rename to README.md
index 3b07534..ab5d2e5 100644
--- a/doc/README.en.md
+++ b/README.md
@@ -1,4 +1,6 @@
 # StackShot3X API for Python
+[**日本語**](./README.ja.md)
+
 API to controll StackShot3X on Python
 
 
@@ -103,34 +105,38 @@ The following is an implementation based on [this](https://www.cognisys-inc.com/
 
 ## class RailStatus
 
-特定の軸におけるレールの状態を表す列挙型
+Enum class representing the status of the rail on a particular axis
 
 
 ## class StackShotStatus
 
-StackShot3Xの状態を表す列挙型
+Enum class representing the status of StackShot3X
 
 
 ## class RailAxis
 
-StackShot3Xのレールの軸を表す列挙型
+Enum class representing the axis of a StackShot3X rail
 
 
 ## class Cmd
 
-StackShot3Xにおける各コマンドを表す列挙型
+Enum class representing each command in StackShot3X
 
 
 ## class Action
 
-StackShot3Xに対する挙動を表す列挙型
+Enum class representing actions for StackShot3X
 
 
 ## class RailDir
 
-レール上の進行方向を表す列挙型
+Enum class representing directions of travel on the rail
 
 
 ## class RailUnits
 
-レールを動かす距離の単位を表す列挙型
+Enum class representing units of distance to move the rail
+
+
+# Acknowledgements
+This software was supported by JSPS Grant-in-Aid for Scientific Research (B)22H03710.
\ No newline at end of file
diff --git a/doc/images/step1.png b/images/step1.png
similarity index 100%
rename from doc/images/step1.png
rename to images/step1.png
diff --git a/doc/images/step2.png b/images/step2.png
similarity index 100%
rename from doc/images/step2.png
rename to images/step2.png
diff --git a/doc/images/step3.png b/images/step3.png
similarity index 100%
rename from doc/images/step3.png
rename to images/step3.png