Documentation link for signup and confirm HTTP actions

[shnplr]

Hi,

When user pool policy allows user to sign themselves up the rendered html includes additional http actions such as /signup & /confirm HTTP (GET/POST). However AWS documentation for domain auth server only mentions /authorize, /login, /logout & /token. I'm just wondering where the documentation for these other HTTP/Web API's are defined? e.g. <form action="/signup?response_type=token&client_id=<appclientid>&redirect_uri=<url>&state=123&scope=openid" method="post"

Form fields include standard username/password and requiredAttributes?? parameter

<input type="email" name="requiredAttributes[email]" ... >

Thanks for any info Cheers, Paul