After migration from wicket 1.4 to wicket 1.5 I can see a new behaviour concerning web URLs. Every pages has ?[0-9]+ added to it for example http://mywickethomepage.com/?0 , http://mywickethomepage.com/?3 .
My question is: what actually it is? Googling just gave me a hint that's an id for stateful page, right? Question number two, is there (an easy) way to hide/remove it as it makes my page urls ugly?