Dispensing feature with built-in combination retention and ad panel

A carton formed from a single blank, said blank comprising:

• a top panel;
• a side panel connected along a fold line to each opposing edge of said top panel;
• a first bottom panel connected along a fold line to one of said side panels at an edge thereof opposite said top panel, said top panel, said side panels, and said bottom panel defining a tubular structure;
• an end structure for at least partially closing each of opposite ends of said tubular structure;
• a displaceable portion detachably connected to said carton to be at least partially detached from said carton to define an opening for exposing an endmost article in said carton for removal, said displaceable portion at least partially defined by a first weakened line in said carton, said opening defining an upper edge of one of said end structures when said displaceable portion is at least partially detached from said carton along said first weakened line;
• and
• a panel portion within said interior obscured from view prior to said displaceable portion being at least partially detached from said carton, said panel portion visually exposed to the exterior of said carton through said opening by at least partial detachment of said displaceable portion from said carton, a distal end of said panel portion extending beyond said upper edge and into said opening for restraining articles within said carton, said distal end being connected to a remainder of said panel portion along a second weakened line corresponding substantially with said upper edge of said one end structure so as to be pivotable along said second weakened line.