Language into which neat prose may be translated (9)

I believe the answer is:

esperanto

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'language' is the definition.
(Esperanto is an example)

'which neat prose may be translated' is the wordplay.
'neat prose' can be anagrammed to 'ESPERANTO'.
But, I am not sure how this is indicated.

'into' is the link.

Can you help me to learn more?

(Other definitions for esperanto that I've seen before include "Artificial international language devised in 1887" , "Dr Zamenhof's language" , "composite language" , "Universal language" , "No repeats of this artificial language, strangely" .)

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