Handwriting learnt by actors (6)

I believe the answer is:

script

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

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

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for script that I've seen before include "Words of film etc" , "Written characters" , "Dialogue" , "letters" , "Performance text" .)

I've seen this clue in The Globe and Mail.

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