Unholy right of breaking window (7)

I believe the answer is:

profane

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'unholy' is the definition.
(similar in meaning)

'right of breaking window' is the wordplay.
'right' becomes 'r' (common abbreviation).
'breaking' is an insertion indicator.
'window' becomes 'pane' (I can't explain this - if you can you should give a lot more credence to this answer).
'r'+'of'='rof'
'rof' placed into 'pane' is 'PROFANE'.

Can you help me to learn more?

(Other definitions for profane that I've seen before include "Desecrate" , "Impious" , "Secular, not religious" , "Contemptuous of sacred things" , "Unholy" .)

I've seen this clue in The Sun.

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