I've checked the official documentation for the WinParrot application, but I didn't find anything specific to the page title. There is a SetTitle command displayed on the page, but it's vastly explained.
I recommend you access their documentation page, then press CTRL + F while on the page and type Title. You can read all about it on that website.
Documentation page: http://www.winparrot.com/WinParrot2_1_GUI_EN.htm