improvements to comments
diff --git a/aos/common/logging/logging_impl.h b/aos/common/logging/logging_impl.h
index 0b1e256..28ffd99 100644
--- a/aos/common/logging/logging_impl.h
+++ b/aos/common/logging/logging_impl.h
@@ -16,13 +16,15 @@
// This file has all of the logging implementation. It can't be #included by C
// code like logging.h can.
+// It is useful for the rest of the logging implementation and other C++ code
+// that needs to do special things with logging.
namespace aos {
namespace logging {
// Unless explicitly stated otherwise, format must always be a string constant,
// args are printf-style arguments for format, and ap is a va_list of args.
-// The validitiy of format and args together will be checked at compile time
+// The validity of format and args together will be checked at compile time
// using a gcc function attribute.
// The struct that the code uses for making logging calls.
@@ -139,6 +141,7 @@
namespace internal {
// An separate instance of this class is accessible from each task/thread.
+// NOTE: It will get deleted in the child of a fork.
struct Context {
Context();