Are you planning to introduce a native Bitrix document editor at some stage? I know we have the Google and Microsoft Office editors, but the downside to those is that the file ends up being saved into the Google Drive or Microsoft Drive, and not in Bitrix. Also you need to have an account in those one of systems, and need to be logged in to use it. A native Bitrix document editor (at least for some doc types, e.g. MS Word) would be ideal.
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