Update with example and ordering

CONTRIBUTING.md

@@ -1,23 +1,40 @@
 # Contributing
 ## What do I check?
 ### Comments
-- Comments in the transcribed code should match 1:1 with the
-respective image.
+- Comments in the transcribed code should match the scans exactly
   - This could involve creating a deliberate typo or removing/adding
   an entire comment.
 
 ### Line breaks
-- Line breaks **with** `R0000` in column 1 should match 1:1.
-- Line breaks **without** `R0000` in column 1 should contain only 1
+- Line breaks *with* `R0000` in column 1 should match the scans exactly.
+- Line breaks *with**__out__* `R0000` in column 1 should contain only 1
 or 2 blank lines in a row.
-  - Lines with `R0000` in column 1 do not count towards this.
   - 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.
   - In the source images, these were created by an unprinted digit
   in column 8. A 2 there forced a double space (single blank line)
   and a 3 forced a triple space (double blank line). Values 4-8 were
   defined but never used. Read more about it in [#159][7]
   
+For example the following:
+```plain
+R0819   SUBROUTINE TO SKIP...
+R0820
+
+
+
+ 0821   LAMPTEST  CS  IMODES33
+```
+Should become:
+```plain
+R0819   SUBROUTINE TO SKIP...
+R0820
+
+
+ 0820   LAMPTEST  CS  IMODES33
+```
+
 ## Formatting
 GitHub, [AGC Assembly][4] for Sublime Text 3 and [Language AGC][5]
 for Atom will ensure you're using the correct formatting
@@ -33,12 +50,12 @@ settings overrides to add to your user settings [here][6].
 ## Useful Extensions
 
 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
-editors:
-- [Visual Studio Code][3]
-- [Sublime Text 3][4]
+Unfortunately your code editor will not, however there are
+AGC language extensions that provides syntax highlighting for the
+following editors:
 - [Atom][5]
+- [Sublime Text 3][4]
+- [Visual Studio Code][3]
 
 [0]:https://github.com/chrislgarry/Apollo-11/pull/new/master
 [1]:http://www.ibiblio.org/apollo/ScansForConversion/Luminary099/