Marginal notes allow to add further information in an elegant and unobtrusive way. We can glance over them and stay with the main text or zone out for a while, when they pique our curiosity.
Because no Markdown element corresponds to the complex HTML <figure> tag, we need this shortcode for self-contained stand-alone images.
A marginal note contains additional nonessential information. It explains some context, sheds light on a detail or speculates on a given topic etc.
Self-contained stand-alone images