VS2010 Default Basic Runtime Checks

What is the default action in a VS2010 C/C++ Win32 project for the parameter "Basic Runtime Checks = Default". This can be found in the C/C++ - Code Generation property page. Tha开发者_StackOverflownks in advance. Max

There are two types of Basic Runtime Checks:

1: Uninitialized variables 2: Corrupted stack frames

Choosing "Default" gives you no runtime checks. The choices in the dropdown are misleading.