Can I include the captions of Illustrations, even when producing a plain text file?
Yes. You can format them as short paragraphs of their own, in brackets, with the word Illustration: followed by the caption, something like: [Frontispiece: A Flash of Light] or [Illustration: Goldsmith at Trinity College] Don’t interrupt a paragraph to insert one, unless the reader really needs to know that the original illustration was in the middle of the paragraph; place the note between paragraphs instead.
