Footnotes are placed at the bottom of the page. They are best suited for technical information, which is not important for the intended meaning of the text.

Footnotes are indispensable for scientific documents or more rigorous essays. They reference sources or elaborate on details. Because they are placed at the end of the content, the footnote marker contains a link allowing to jump to the note. And the note contains a link back to the marker.

Syntax

A Footnote consists of a marker and a separate reference below. Every reference needs to be unique for logical reasons. But it’s possible to refer multiple times to the same reference. The same marker may appear more than once on a page.

Marker

A marker looks like [^1] or [^footnotephrase]. The brackets and the ^ character are mandatory, the name of the marker can be chosen arbitrarily — no need to count or follow some pattern.

There’s only one rule: All references on a page need to be unique.

Reference

To mark the reference, we have to repeat the marker somewhere in the file on a separate line. After an additional colon and a space : follows the content. To add separate paragraphs to a footnote, we need to indent them by four spaces or a tab.

The order of the references in the file is irrelevant, the generated footnotes are always sorted in the same order as the markers.

This sentence includes a footnote after a word[^10] and one 
at the end.[^footnotephrase] We can refer more than once[^10] to a footnote.

[^footnotephrase]: This footnote reference is placed above the other
reference from the footnote marker before. This may happen easily with
many footnotes and is no problem.

    If we indent a paragraph below a footnote reference by four
    spaces or a tab, it adds a new paragraph to this footnote.

[^10]: This is the reference for the first and the last footnote marker in this example.

Layout

The markers on a page are always numbered in the order of their appearance and placed at the bottom of the page below a horizontal rule. The syntax example from above is styled like this:

This sentence includes a footnote after a word1 and one at the end.2 We can refer more than once1 to a footnote.

The markers are enclosed in square brackets by Perplex as it is custom in the field of natural sciences. The notes are moved as usual to the bottom of the page below a horizontal rule.


  1. This is the reference for the first and the last footnote marker in this example. ↩︎ ↩︎

  2. This footnote reference is placed above the other reference from the footnote marker before. This may happen easily with many footnotes and is no problem.

    If we indent a paragraph below a footnote reference by four spaces or a tab, it adds a new paragraph to this footnote. ↩︎