Three or more...
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Hyphens
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Asterisks
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Underscores
Escaping characters
To escape a special Markdown character, use a backslash before it, like this: \*literal asterisks\*
Footnotes
Here is a simple footnote[^1].
A footnote can also have multiple lines[^2].
You can also use words, to fit your writing style more closely[^note].
[^1]: My reference.
[^2]: Every new line should be prefixed with 2 spaces.
This allows you to have a footnote with multiple lines.
[^note]:
Named footnotes will still render with numbers instead of the text but allow easier identification and linking.
This footnote also has been made with a different syntax using 4 spaces for new lines.