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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-r
!(x %in% y)... great tip.dplyrcan handle this, e.g.,filter(df, foo %notin% c("a", "c", "e"))%noin%in afiltercall and it didn't work, non-suprisingly.anti_joinbelow . . .