Hi,

I just had a general question on cels & sketches 
& was wondering if anyone knows the answer. so 
here it is.

For each animation cel that is made, is there a 
corresponding sketch that is also made?  For 
example if there are numerous cels where the 
picture is exactly the same but the picture just 
moves slightly (up down left right), do they just 
draw one sketch & paint the cels based on that 
one sketch to save time drawing more than one 
sketch or basically move the cel slightly (I 
assume they don't move the cel considering there 
are holes on the cel for positioning). I'm just 
curious to know if that may be one reason that 
certain cels don't come with sketches.

Thanks in advance for your help!