Is it printed on graph paper? (5)

I believe the answer is:

photo

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'paper?' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for photo that I've seen before include "Snap (abbrev.)" , "Snap, pic" , "Picture, in short" , "This race finish is very close" , "Pic (abbr)" .)

I've seen this clue in The Globe and Mail.

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