Judicial decision-making lines on page (6)

I believe the answer is:

ruling

I believe this clue is a double definition.

'judicial decision' is the first definition.
(ruling is a kind of judicial decision)

'making lines on page' is the second definition.

(Other definitions for ruling that I've seen before include "Decision as of judge" , "Judgement" , "Decree" , "Drawing a fine line" , "currently in force" .)

I've seen this clue in The Guardian.

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