This page is in the nature of an aside from a longer page: interesting to some, not to others. Probably does not stand alone.
Name comes from that style of aside that's better than footnotes and *way* better than end notes.
A sidenote from How not to be a sucker² ⠀⠀⠀⠀⠀⠀⠀⠀⠀ ² citations 