Is it wrong in XML to have element nodes as siblings of text nodes?

Question

Is the following \"allowed\" or simply bad use of XML? I cannot find restrictions on this, but it feels a bit weird.

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Answer 1

In addition to the answers above (with which I agree) I would add that it depends on the purpose of the XML document. If the purpose is to communicate business data between applications then validation of the entire document may be a requirement. Mixed content cannot be strictly validated using XML Schema, and is usually avoided in business-to-business communications unless it is for documentation purposes only.