Plagiarise tales? (5)

I believe the answer is:

steal

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

'plagiarise' is the definition.
(steal can mean to copy or plagiarise)

'tales?' is the wordplay.
'tales' anagrams to 'STEAL'.
Though, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for steal that I've seen before include "pirate" , "Appropriate" , "Take without permission" , "Rob" , "Plagiarise" .)

I've seen this clue in the Evening Standard.

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