Apple Newton Press (Macintosh) - Manual (Page 46)

Inverting text
To make headings and specific paragraphs of text stand out, you can invert
the text so that it appears as white text against a black background. Inverting
text is especially useful for creating distinctive headings in your books.
To invert selected text:
1 Select the text you want to invert.
2 Choose Invert from the Format menu.
To change inverted text back to normal, select the text and choose Invert from
the Format menu again.
46 Chapter 3
Inverted text