pressing spacebar at end of doc

[Anindya Sen <anindya atc tcs co in>]

Hi,
    Recently while using Evince, I noticed that pressing a "Spacebar"
    once we reach the *end* of the document takes us to its
    *beginning*.  Likewise, pressing "Backspace" at the beginning
    takes us to the end.  
    
    The question is : Is this a feature or a bug?  I don't know of
    many apps that do that, hence the surprise :).

Regards,
Anindya