Hello,
in an effort to standardize all post parameters in the REST v1 API to use snake_case names, we have deprecated the bodyOnly flag in the wikitext to HTML transform end point [1]. Instead, clients should use body_only, as mentioned in the documentation.
We plan to remove support for the old form by the end of November.
Thanks,
Gabriel
[1]: https://en.wikipedia.org/api/rest_v1/?doc#!/Transforms/post_transform_wikite...
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