Markdown/Text_format.md

Line breaks

A single press of Enter will not start a new line. Add two spaces at the end of a line, then press Enter.
Put a backslash () \ at the end of a line, then press Enter.
Use the HTML tag <br>.

Font & Text Emphasis.

Text emphasis is an important writing skill. Markdown provides simple ways to apply bold and italic styles.
Markdown supports two common text styles: bold and italic.
Bold syntax: Wrap text with two asterisks ** or two underscores __.
Italic syntax: Wrap text with one asterisk * or one underscore _.
Bold and italic syntax: Wrap text wiht three * or _.
For example: Italic,Bold,Bold and italic.

Horizontal Rule (HR)

In Markdown, the Horizontal Rule is used to add a dividing line, and its usage is very simple.
Simply enter three or more identical symbols (*,-,_) on a single line. Spaces between symbols are allowed and will not affect the display.

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Strikethrough

Strikethrough syntax: Wrap text with two tilde marks ~~
For example

Underline

Markdown has no native syntax for underlines. You need to use HTML tags instead <u>.
Syntax: Use the tag <u> to wrap the content.
Underline text

Footnote

Footnotes are used to add supplementary notes, explanations or citations to text.