Any participant can reply anywhere in the message, edit the content and add participants at any point in the process.

所有的参与者在任何地方，任何时候，都可以回复消息，编辑内容，添加成员等。

youdao

That said, I cannot for the life of me figure out how to delete or move a single message in a conversation, but rather I must edit the whole exchange.

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Text messaging has been spruced up as well, allowing multiple recipients to be added at the same time when sending a message, automatically saving unsent texts as drafts and letting users edit received messages before forwarding them.

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