footnote

a footnote appurtenant to the subject

a political scandal that was but a footnote to modern history.

The explanation in the footnote -fied the difficult sentence.

this incident seemed destined to become a mere footnote in history.

Footnotes illuminated the difficult passages of the text.

And, in order to stay out of the hoosegow, it's always good to put within quotation marks, and to footnote, any words or ideas that are not your own.

It supports embedded LaTeX code, footnotes, citations, biblographies, automatic generation of an index etc.。