Identifying might be done by copying the item, or one of its kind
in your key. Also remember the clearing of a shaft to the sides of an
arrow as described in the General chapter.
Keep in mind that an outline is not enough to indicate an area: it has to be hatched too.
A biology picture often has many small items, like cells. These items are generally of a few kinds, but differentiation within a type might be considerable: to a sighted reader this will not pose a problem, but to a blind reader the individual differences will loom large, and I think he will not recognize the types but just discern a lot of different, individual items. So I will draw all cells of one kind in exactly the same manner (which is very easily done in computer-aided draughting, of course). To the sighted this formalized picture may look rather funny, but it will greatly help our readers understand. As I've said before, this kind of editing aks for some knowledge and understanding of the subject matter in hand.
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