[Feedback]Auto Sign-in after Sign-up missing explanation

**Page**: [`/lib/auth/emailpassword/q/platform/[platform]`](https://docs.amplify.aws/lib/auth/emailpassword/q/platform/js)

**Feedback**:

In the section, "Auto sign in after sign up" the code snippet given isn't explained at all - what is this? How is this helpful? Should this be set up before the signup function is called? Can it be called from Auth.confirmSignUp().then()? Are you supposed to be able to return the user from this function? Can an example be provided? Any context at all would be helpful.

Thank you!