diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b2bec00
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.agc]
+indent_style = tab
+tab_width = 8
+
+[*.md]
+indent_style = space
+indent_size = 2
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5a8df4a..813752d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,8 +1,8 @@
 # Contributing
 ## Guidelines
 ### Comments
-- Comments in the transcribed code should match 1:1 with the 
-respective image. 
+- Comments in the transcribed code should match 1:1 with the
+respective image.
   - This could involve creating a deliberate typo or removing/adding
   an entire comment.
 
@@ -10,7 +10,7 @@ respective image.
 - Line breaks **with** `R0000` in column 1 should match 1:1.
 - Line breaks **without** `R0000` in column 1 should only contain 1
 to 2 blank lines in a row.
-  - If there are more than 2 blank lines breaks, strip the extra 
+  - If there are more than 2 blank lines breaks, strip the extra
   line breaks.
   - Lines with `R0000` in column 1 do not count towards this number.
   - In the source images, these were created by an unprinted digit
@@ -19,9 +19,9 @@ to 2 blank lines in a row.
   defined but never used. Read more about it in chrislgarry/Apollo-11/#159
 
 ## Formatting
-[AGC Assembly][4] for Sublime Text 3 and [Language AGC][5] for Atom
+GitHub, [AGC Assembly][4] for Sublime Text 3 and [Language AGC][5] for Atom
  will ensure you're using the correct formatting automatically.
- 
+
 [AGC Assembly][3] for Visual Studio Code provides language-specific
 settings overrides to add to your user settings [here][6].
 
@@ -33,7 +33,7 @@ settings overrides to add to your user settings [here][6].
 
 GitHub has syntax support for the AGC assembly language built-in.
 Unfortunately your code editor will not. Luckily there is a language
-extension that provides syntax highlighting for the following 
+extension that provides syntax highlighting for the following
 editors:
 - [Visual Studio Code][3]
 - [Sublime Text 3][4]
@@ -46,4 +46,4 @@ editors:
 [4]:https://github.com/jimlawton/AGC-Assembly
 [5]:https://github.com/Alhadis/language-agc
 [6]:https://github.com/wopian/agc-assembly#user-settings
-[7]:https://github.com/chrislgarry/Apollo-11/issues/159
\ No newline at end of file
+[7]:https://github.com/chrislgarry/Apollo-11/issues/159
diff --git a/README.md b/README.md
index d02c157..08159cc 100644
--- a/README.md
+++ b/README.md
@@ -3,19 +3,19 @@ Apollo-11
 
 *Available in: [English][EN], [简体中文][ZH_CN], [正體中文][ZH_TW].*
 
-Original Apollo 11 guidance computer (AGC) source code for Command 
-Module (Comanche055) and Lunar Module (Luminary099). Digitized by 
+Original Apollo 11 guidance computer (AGC) source code for Command
+Module (Comanche055) and Lunar Module (Luminary099). Digitized by
 the folks at [Virtual AGC][0] and [MIT Museum][1]. The goal is to be
-a repo for the original Apollo 11 source code. As such, PRs are 
+a repo for the original Apollo 11 source code. As such, PRs are
 welcome for any issues identified between the transcriptions in this
-repository and the original source scans for [Luminary 099][2] and 
+repository and the original source scans for [Luminary 099][2] and
 [Comanche 055][3], as well as any files I may have missed.
 
 ## Contributing
 Please read **[CONTRIBUTING][4]** before opening a pull request.
 
 ## Compiling
-If you are interested in compiling the original source code, check 
+If you are interested in compiling the original source code, check
 out [Virtual AGC][5].
 
 ## Attribution