Handwriting often used in the rehearsal (6)

I believe the answer is:

script

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'handwriting' is the definition.
(I know that handwriting can be written as script)

I can't explain the rest of the clue.

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(Other definitions for script that I've seen before include "Written version of a dramatic composition" , "Form of text" , "Written form (of play etc)" , "letters" , "Text of play, film etc" .)

I've seen this clue in The Irish News.

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