1. The document provides guidelines for consistently writing out numbers and dates in sentences. It recommends spelling out numbers one through one hundred and using figures for larger numbers. 2. The rules specify how to write out fractions, decimals, dates, times, decades, and numbers that start sentences. Consistency is important, whether using words or figures, within individual examples and categories. 3. Hyphenate compound numbers between twenty-one and ninety-nine. Use "noon" and "midnight" rather than specifying 12-hour times. Spell out times with half or quarter hours, but use figures when emphasizing exact times or with A.M. or P.M.