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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-bash
PROMPT_SUBSTaffects all ordinary expansions that are part of a prompt. There are better ways to get color in thezshshell's prompt.%F{red}sets the foreground color to red, for example. See the manual.