Create two blank lines in Markdown

I am adding Markdown support to my CMS editor.

When writing Markdown content, how do I create two empty lines?

I have been trying, but I always get only one line.

Solution 1:

If your Markdown compiler supports HTML, you can add <br/><br/> in the Markdown source.

Solution 2:

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!

Solution 3:

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
&nbsp;
&nbsp;

### HTML <(br)/> tag
<br />
<br />

## Creates 2 Lines that CANNOT be selected as text
## -------------------------------------------------
### HTML Entity &NewLine;
&NewLine;
&NewLine;

### Backticks with a space inside followed by two spaces
`(space)`(space)(space)
`(space)`(space)(space)
#### sample:
` `  
` `

# End

Solution 4:

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  

Solution 5:

Basically, if the library you are using is CommonMark-compliant, you can add multiple hard line breaks (<br />) easily. Here's a quotation from CommonMark's latest specifications (0.28):

A line break (not in a code span or HTML tag) that is preceded by two or more spaces and does not occur at the end of a block is parsed as a hard line break (rendered in HTML as a
tag)

and then...

For a more visible alternative, a backslash before the line ending may be used instead of two spaces

The specification is quite clear. However, the library I have been using MarkDig, doesn't quite work with the two spaces technique (must be a bug), but it works flawlessly with a backlash.

That said, this input...