Tons redacted from paper publication (5)

I believe the answer is:

issue

I'm a little stuck... Click here to teach me more about this clue!

'publication' is the definition.
(I know that publication can be written as issue)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for issue that I've seen before include "Subject of debate" , "Publish; children" , "Topic; give out" , "Bone of contention" , "one's children?" .)

I've seen this clue in The Independent.

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