I have really appreciated all of the assistance that I have received through this forum, so I thought I would go to the well once again and ask my "newbie" question:  I have a custom vf and apex application (one each for "view" and "edit").  I have created a new list view that contains my preferred fields, as opposed to the standard list view.   I have overridden the "View" and "Edit" buttons from my object's list view to call my custom pages.  On my custom pages I have a standard "Cancel" button which, when pressed, I want to return the user to my NEW list view and NOT to the standard object's list view.  When I click on the "Edit" button (at the far right, in the inverted triangle) to access my custom page, and then click my "Cancel" button it works perfectly; returning me to my custom new list view.  I have NOT overriden the Cancel method in Apex at all.  However, when I access my "View" page from the blue hyperlinked item the "Cancel" button returns me back to the STANDARD list view as opposed to my NEW list view.  Also, I had to include a "Cancel" method in my Apex code with this code:

return new ApexPages.Action('{!List}').invoke(); 

 or it would not even return to ANY list, but stayed on the same page. 

My question is:  why do I need to override the "Cancel" method at all, as I thought it's standard behavior would be to return to the MOST RECENT page, which should be my new list view?   Is there some way that I can safely and securly capture the URL of the previous list view so I can easily return to it? 

I know this got pretty long, but I would appreciate your insights on this.  Thanks very much.