COPYEDITING TIPS

Rules for numbers and numerals: In technical documents use the numeral:  15,  99, 20%, 5 trials, 123 million. In nontechnical documents spell out whole numbers less that 101: fifteen, ninety-nine, …

COPYEDITING TIPS

Rules for capitalisation of geographical names: Coordinates and imaginary boundaries are lowercased: prime meridian, equator. Distinct areas of globe are capitalised:  Arctic Circle, Tropic of Capricorn. Proper place names, nicknames, …