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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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localhost:10.0and notlocalhost:1.0?" A: to leave space for 10 local X11 servers (0..9), assuming they still want to listen on a tcp socket (which they don't anymore do by default).