They do not begin with "Transcriber's note", "footnote", or "Illustration".
"Makers of Modern Medicine"
James J. Walsh
In a footnote the word "dumb" is offered as an alternative for "irrational."
"The Human Side of Animals"
Royal Dixon
Mode, definition of; indicative; infinitive; imperative; obligative, footnote; participal; potential, of; subjunctive.
"Practical Grammar and Composition"
Thomas Wood