Points to remember: Misc

App_code directory is a new feature, it was not present in ASP.net 1.0 and 1.1
The System Namespace is the root namespace for fundamental types in the .net framework
System Namespace includes classes that represent the base data types used by all application
All types derive from the System.Object base type
A type can implement any number of interfaces
To implement an interface, a type must implement all the virtual members of that interface
Passing a structure by reference is equivalent to passing an object by value
A cookie without an expiration date is a session cookie