Template:HiddenNote/doc

Usually, footnotes appear in the Notes section in the order they appear in the text. HiddenNote is a template that allows you to create notes in an order that doesn't display, and by using the  parameter of notes later on you may display them in a different order while preserving a fixed order in the Notes section, that of the HiddenNote template.

Example:

This text will have the second note followed by the first.

This text will have the second note followed by the first.