Crossword Genius

Change to hymn, inserting line for publication (7)

Ross

I believe the answer is:

monthly

'publication' is the definition.
(monthly is a kind of publication)

'change to hymn inserting line' is the wordplay.
'change' indicates an anagram.
'inserting' indicates putting letters inside.
'line' becomes 'l'.
'to'+'hymn'='tohymn'
'tohymn' with letters rearranged gives 'monthy'.
'monthy' going around 'l' is 'MONTHLY'.

'for' is the link.

(Another definition for monthly that I've seen is " Twelve times a year".)

I've seen this clue in The Guardian.
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