Forbade atexit()
diff --git a/doc/c-style-guide.md b/doc/c-style-guide.md
index 517f60a..369bd56 100644
--- a/doc/c-style-guide.md
+++ b/doc/c-style-guide.md
@@ -17,7 +17,7 @@
------------
- Public header files (those in the include/grpc tree) should compile as
- pedantic C89
+ pedantic C89.
- Public header files should be includable from C++ programs. That is, they
should include the following:
```c
@@ -52,10 +52,10 @@
C99 Features
------------
-- Variable sized arrays are not allowed
-- Do not use the 'inline' keyword
+- Variable sized arrays are not allowed.
+- Do not use the 'inline' keyword.
- Flexible array members are allowed
- (https://en.wikipedia.org/wiki/Flexible_array_member)
+ (https://en.wikipedia.org/wiki/Flexible_array_member).
Comments
--------
@@ -70,7 +70,15 @@
Symbol Names
------------
-- Non-static functions must be prefixed by grpc_
-- static functions must not be prefixed by grpc_
-- enumeration values and #define names are uppercased, all others are lowercased
-- Multiple word identifiers use underscore as a delimiter (NEVER camel casing)
+- Non-static functions must be prefixed by `grpc_`
+- Static functions must *not* be prefixed by `grpc_`
+- Enumeration values and `#define` names must be uppercase. All other values
+ must be lowercase.
+- Multiple word identifiers use underscore as a delimiter, *never* camel
+ case. E.g. `variable_name`.
+
+Functions
+----------
+
+- The use of [`atexit()`](http://man7.org/linux/man-pages/man3/atexit.3.html) is
+ in forbidden in libgrpc.
