Hi,
you can put modifier before the method name. these modifiers controls
things like access, return type, etc
protected means that that the method is visible inside the class and for
theirs derivers, nobody else can use it..
override means that it will change the implementation of a previously
defined method with the same name and parameters
void means that it returns nothing.
Check the C# language definition or any book that explains the C# language
cheers,