Was book's content order intended to be restrictive? (4)
I believe the answer is:
asbo
'order intended to be restrictive?' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'was book's content' is the wordplay.
'content' says the answer is hidden in the clue (I've seen 'content of' mean this).
'ASBO' is hidden within 'was books'.
Can you help me to learn more?
(Other definitions for asbo that I've seen before include "Reprimand for anti-social behaviour in the UK" , "Order made for bad behaviour" , "Court order to prevent bad behaviour" , "Acronym for a legal restraint" , "Court restraining order" .)