diff --git a/cpp-style-and-conventions.md b/cpp-style-and-conventions.md
index 6b67e12..f09aefa 100644
--- a/cpp-style-and-conventions.md
+++ b/cpp-style-and-conventions.md
@@ -256,6 +256,15 @@
 [pycodestyle]
 max-line-length = 80
 ```
+By default, pycodestyle does not enforce the following rules: E121, E123, E126,
+E133, E226, E241, E242, E704, W503, and W504. These rules are ignored because
+they are not unanimously accepted and PEP 8 does not enforce them. It is at the
+repository maintainer's discretion as to whether to enforce the aforementioned
+rules. These rules can be enforced by adding the following to the setup.cfg:
+```
+[pycodestyle]
+ignore= NONE
+```
 
 ### Bracket style