JSF: initial request and postback request?

Question

Please take a look at this below line of code in JSF

Quote from java.sun.com:

Answer 1

Initial request passes only Restore View & Render Response phases, while postback request process under all phases (Apply Request Values, Validations Phase, etc).

Initial request is created by clicking a link, pasting an URL in address bar, while a postback request is create by posting a form by clicking a submit button or any post request.