pimp translates a text into a support language and back into the original language
using DeepL API Pro. Use available_languages to list all supported languages.
An authentication key is required to use this service.
The service costs depending on the number of translated characters.
character vector with texts to be improved. Only UTF8-encoded plain text is supported.
An element can contain several sentences, but should not exceed 30kbytes.
source_lang
language of the text to be improved. If input is of length 1, the same source
language is applied to all elements.
help_lang
language used as a help language for reverse translation.