Complex sentence: In a modified-block format letter, all text is left aligned (except the author's address, date, and closing), paragraphs are not indented, and the author's address, date, and closing begin at the center point.
Split into simpler sentences: In a modified-block format letter, all text is left aligned (except the author's address, date, and closing). The author's address, date, and closing begin at the center point.