Apple Newton Press (Macintosh) - Manual (Page 41)

Aligning text
You can change the alignment of text within the margins of the book. You can
left-align text, center it, or align it on the right margin.
You can align a single paragraph or a group of paragraphs. You cannot change
the alignment of individual lines within a paragraph.
Left aligned Centered
Right aligned
41 Formatting Your Newton Book