diff --git a/README.md b/README.md
index 5989a31f..c018aae3 100644
--- a/README.md
+++ b/README.md
@@ -169,16 +169,6 @@ Therefore, we recommend you keep this nuget package as up to date as possible us
 
 For more information on metadata usage, please refer to the [main repository faq](https://github.com/google/libphonenumber/blob/master/FAQ.md#metadata)
 
-## ToDo
-
-* update / add / port new unit tests and logging from java source
-
-## How to unfold automatic generated files
-
-* Install Jetbrains - Resharper for Visual Studio
-* File by file, right click and "Cleanup code"
-* Check the unfolded file
-
 ## Running tests locally
 
 ```bash
diff --git a/csharp/README.md b/csharp/README.md
index 9c98b8b6..56e28ff5 100644
--- a/csharp/README.md
+++ b/csharp/README.md
@@ -44,9 +44,9 @@ Known Issues
   and embedded in the assembly. No zip files or text files are needed to run the library or its
   tests.
 
-
-Todo
-----
-
-- Restore the Java logging calls?
-- Find a suitable replace for Java CharSequence in phone numbers parsing API.
+- Java's public API accepts `CharSequence` in several entry points (e.g.
+  `PhoneNumberMatcher`'s constructor, `isViablePhoneNumber`), letting callers pass a `String`,
+  `StringBuilder`, or `StringBuffer` without copying. The C# port takes `string` in the
+  equivalent spots (`PhoneNumberMatcher(PhoneNumberUtil, string, ...)`,
+  `PhoneNumberUtil.IsViablePhoneNumber(string)`) instead of a comparable abstraction, so a
+  caller building up a number in a `StringBuilder` has to call `.ToString()` first.