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create code fences with backticks ` or tildes ~
```
like so
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add language identifier to highlight code
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def function(foo):
print(foo)
``` - put returns between paragraphs
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idandmedia-type. If you wanted to match against a variable you'd pop a variable in the expression, ensuring that the variable value was suitable mangled so as not to contain an unescaped single quoteid(which was OK) and amedia-typewhich is a mime-type such as 'image/jpeg' or 'image/png' etc. I wasn't aware how to handle anandcondition or a 'starts-with' function. Your solution is short , and it works too! Thanks.