A footnote is a reference of an explanatory note at the bottom of the page. They are usually small numbers alongside a word or sentence.
note reference marks
Note Reference Marks
In MLA style, the superscript number is used as a note reference mark to signal the existence of an explanatory note. The superscript number corresponds to the note located at the bottom of the page or end of the document.
a superscript
footnote
it is a header
Shut up and get a life
flag
A Boolean variable can be used to signal when a condition exists. It can have a value of true or false based on whether the condition is met or not.
The bottom line is "No."It likewise does not prove that God does notexist.
By definition a continuous signal is just that continuous to have no amplitude is to mean it doesn't exists
display only when immediate or potential danger exists