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create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
print(foo)
``` - put returns between paragraphs
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lang-js
instanceofchecks to see if an object is an instance of a particular constructor function. AnHTMLElementconstructor in one realm is not the same as the same-named constructor in another realm.targetyou could use to determine its type? target.tagName?