what does the angular bracket mean in "SignInManager"

Hi,

I have a very basic syntax question, I have seen declaration such as

public class SignInManager<TUser, TKey> : IDisposable
where TUser : class, IUser<TKey>
where TKey : object, IEquatable<TKey>

I have problem understanding this code, what does the "<>" mean? (generic?) Can anyone please point out a link for me to study?

Thanks a lot!