hmm i think both of those pictures wndkrn is 
showing are matching drawings to a cel (douga). A 
genga is usually framed in a box and has the 
sequence number on top, rather than the cel 
numbers. And they should not match any cels 
because its not actaully used to make a cel
http://www.animanga.com/cels/info/cels.html
but I can be wrong...