What does <?..?> mean in XML? -

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what <?..?> mean in xml?

example:

<?xml version="1.0" encoding="utf-8"?> <tests> <test><?xml-multiple ?> </test> </tests>

i want know <?xml-multiple ?> means in above xml? syntax-checked xml in w3schools, there no error.

this processing instruction. processing instructions used directly pass on information or instruction application via parser, without parser interpreting it.

<?my-application instructions ?>

the token after initial question mark (here my-application) called target , identifies application @ instruction aimed. follows not further specified xml, treated parser black box, , application interpret it. entity , character references not recognized.

processing instructions target xml-multiple seem commonly produced, accepted , recognized applications transform xml json or json xml (including oracle) in order identify arrays, though not sure , if behavior officially standardized.

processing instructions not confused initial <?xml version="1.0"?>, called text declaration.


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