- One word: website, email, online
- Numbers: Spell out numbers under 10. Use numerals for numbers larger than single digits.
- Spell out percentage, don’t use the symbol %.
- Avoid using “according to.” It implies that what a person says is suspect.
- Use “more than” instead of “over” when referring to numbers. “over” is a direction.
- That vs. Which: This has to do with essential vs. non-essential clauses. “That” is used for essential clauses – those not set off by commas. “Which” is used for non-essential clauses – those that are set off by commas.
- Who vs. Whom vs. That: Use “who” and “whom” when referring to people and to animals with a name. Use “that” when referring to inanimate objects and animals without a name. A good way to remember whether to use “who” or “whom” is whether you can replace it with he (for who) or him (for whom).
Use figures except for noon and midnight. Use a colon to separate hours from minutes: 11 a.m., 1 p.m., 3:30 p.m., 9-11 a.m., 9 a.m. to 5 p.m.
Avoid such redundancies as 10 a.m. this morning, 10 p.m. tonight or 10 p.m. Monday night.
Abbreviations and Acronyms
- In general, avoid alphabet soup. Do not use abbreviations or acronyms that the reader (public, non-government) would not quickly recognize.
- Before a name: Abbreviate titles when used before a name
- After a name: Abbreviate junior or senior after a name. Abbreviate company, corporation, incorporated and limited when used after the name of a corporate entity.
- With dates or numerals: Use the abbreviations A.D., B.C., a.m., p.m., No., and abbreviate certain months (Jan., Feb., Aug., Sept., Oct., Nov., Dec.) when used with the day of the month.
- Right: In 450 B.C.; at 9:30 a.m.; in room No. 6; on Sept. 16.
- Wrong: Early this a.m. he asked for the No. of your room. The abbreviations are correct only with figures.
- Right: Early this morning he asked for the number of your room.
Capitalize the names of months in all uses. When a month is used with a specific date, abbreviate only Jan., Feb., Aug., Sept., Oct., Nov. and Dec. Spell out when using alone, or with a year alone.
When a phrase lists only a month and a year, do not separate the year with commas. When a phrase refers to a month, day and year, set off the year with commas.
Examples: January 2016 was a cold month. Jan. 2 was the coldest day of the month. His birthday is May 8. Feb. 14, 2013, was the target date. She testified that it was Friday, Dec. 3, when the crash occurred.
In tabular material, use these three-letter forms without a period: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.