diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f00eee5..70d1f7c 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -80,7 +80,16 @@ Please use 4-space indentation to trigger code parsing, rather than [fenced code
             std::cout << "This is code.\n";
         }
 
+#### Document style decisions
+
+We've discussed and made decisions on a number of document style. Please do not open PRs that revisit these stylistic points:
+
+- The CppCoreGuidelines.md file is a single GH-flavored Markdown file. It is not split into separate chapters.
+- We do not use syntax highlighting in the Core Guidelines. See PRs #33, #96, #328, and #779. If you want syntax highlighting you
+can either view the "pretty" version at http://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines or do your own post-processing.
+- We're sticking with the ASCII character set (outside of the joke at the beginning of the document.) We do not use Unicode em-dashes, 
+Unicode spaces, or pretty quotes. Lots of people edit this file with their various text editors. ASCII is simple and universally understood. 
+
 ### Miscellaneous
 
-To avoid line-ending issues, please set `autocrlf = input` and `whitespace =
-cr-at-eol` in your git configuration.
+To avoid line-ending issues, please set `autocrlf = input` and `whitespace = cr-at-eol` in your git configuration.