Create two blank lines in Markdown
I only know the options below. It would be great to take a list of all of them and comment them differences
# RAW
## Creates 2 Lines that CAN be selected as text
## -------------------------------------------------
### The non-breaking space ASCII character
### HTML <(br)/> tag
<br />
<br />
## Creates 2 Lines that CANNOT be selected as text
## -------------------------------------------------
### HTML Entity 





### Backticks with a space inside followed by two spaces
`(space)`(space)(space)
`(space)`(space)(space)
#### sample:
` `
` `
# End
If your Markdown compiler supports HTML, you can add <br/><br/> in the Markdown source.
In Markdown flavours that support equation output, the following should work on a line by itself, with empty lines before and after (repeat for more lines):
$~$
It is basically an equation containing nothing but a single equation-white-space. The benefit is that in Markdown flavours that include both PDF and HTML output options (including Rmarkdown), it should be understood in the same way for both output types, whereas I'm not sure how PDF output would interpret <br> or
I test on a lot of Markdown implementations. The non-breaking space ASCII character (followed by a blank line) would give a blank line. Repeating this pair would do the job. So far I haven't failed any.
For example:
Hello
world!