Empty lines (vertical space)

I have a tiny question? Sometimes I would like to add an empty line – for example after a table or a figure. Is there a way to do this in Markdown so that the plugin understands?

Until now I do this with
— is there a Markdown way to do the same?

http://wordpress.org/extend/plugins/markdown-on-save-improved/