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"each one adding more operators (and therefore requiring more characters to be escaped" -- except that BRE has some characters that are special exactly when "escaped" by backslashes, mainly \{/\} and \(/\) (but not \+or \|).
– ilkkachu
Commented Jan 23 at 18:13
2

@ilkkachu yes I know, but I'm trying to keep a complex subject as simple as I dare
– Chris Davies
Commented Jan 23 at 18:14

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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
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

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