Markdown new line

Markdown supports a number of ways to add a new line so you can choose the one that best suits you. The most basic method is adding a double spacebar at the end of a sentence

first line  
second line

first line
second line

This does mean we get trailing whitespaces though so if you want to avoid that you can instead use a backslash \ at the end of the line:

first line\
second line

first line
second line

Sadly not all markdown editors support that and if that also doesn't work for you you'll need to try a workaround. For some editors a small cheat like adding an empty header might work:

first line

####

second line

first line

second line

If that doesn't work you're left with using HTML and a breakline tag <br />

first line
second line

Oddly enough sometimes a non-breaking space &nbsp also work but that's probably wholly unintended ( ¯\ (ツ)/¯ )

first line   second line