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- 14,6
- Numbers, units of measure, mathematical equations, and symbols are used far
- more frequently in technical documents than they are in ordinary composition.
- They must be written clearly and consistently. Using too many symbols invites
- confusion. "Containers hold 75# of #5 carbon black", for instance, should be
- expressed as, "containers hold 75 pounds of no. 5 carbon black". Use specific
- and concrete terms rather than vague generalities: "He ran the 100-yard dash
- in 10.2 seconds" and "Aircom's Scrubbing System saves Samson $7,000 per day."
- Mathematical equations and expressions must be typed in one consistent style.
- Operational signs (=, +, -, <, >) are usually preceded and followed by a space
- (y = mx + b), but no space follows a plus or minus sign indicating positive or
- negative value (X = -71). Be concise. Many technical writers think that long,
- jargon-filled documents seem important. They are wrong. The First Amendment to
- the U.S. Constitution contains 45 words; Newton's first law of motion contains
- 29. A personal letter written in Texas in 1976 was 1,113,747 words long!