KSC-DF-107 Revision F TECHNICAL DOCUMENTATION STYLE GUIDE July 8, 2017 Engineering Directorate National Aeronautics and Space Administration John F. Kennedy Space Center KSC FORM 16-12 06/95 (1.0) PREVIOUS EDITIONS MAY BE USED KDP-T-5411_Rev_Basic-1 APPROVED FOR PUBLIC RELEASE — DISTRIBUTION IS UNLIMITED KSC-DF-107 Revision F RECORD OF REVISIONS/CHANGES REV CHG LTR NO. DESCRIPTION DATE Basic issue. February 1979 Basic-1 Added Section V, Space Station Project Documentation July 1987 Format and Preparation Guidelines. A General revision incorporating Change 1. March 1988 B General revision incorporating Supplement 1 and the metric August 1995 system of measurement. C Revised all sheets to incorporate simplified document November 15, 2004 formats and align them with automatic word processing software features. D Revised to incorporate an export control sign-off on the April 6, 2005 covers of documents and to remove the revision level designation for NPR 7120.5-compliant project plans. E General revision. August 3, 2015 F General revision and editorial update. July 8, 2017 ii APPROVED FOR PUBLIC RELEASE — DISTRIBUTION IS UNLIMITED KSC-DF-107 Revision F CONTENTS 1. INTRODUCTION ............................................................................................ 1 1.1 Purpose ......................................................................................................... 1 1.2 Scope and Application.................................................................................... 1 1.3 Conventions of This Guide ............................................................................. 2 2. DOCUMENTS ................................................................................................ 2 2.1 Applicable Documents.................................................................................... 2 2.1.1 Government Documents ................................................................................ 2 2.1.2 Non-Government Documents ......................................................................... 3 2.2 Reference Documents.................................................................................... 3 2.2.1 Government Documents ................................................................................ 3 2.2.2 Non-Government Documents ......................................................................... 3 3. GENERAL CONVENTIONS FOR WRITING AND FORMATTING.................. 4 3.1 Selecting Words and Phrases ........................................................................ 4 3.2 Consistency and Accuracy of Terms .............................................................. 4 3.3 Voice and Mood ............................................................................................. 5 3.4 Shall, Should, Will, and Must .......................................................................... 5 3.5 Abbreviations ................................................................................................. 6 3.5.1 Types of Abbreviations ................................................................................... 6 3.5.2 Use of Abbreviations ...................................................................................... 7 3.5.3 Abbreviations Not Called Out ......................................................................... 7 3.5.4 Plurals of Abbreviations .................................................................................. 8 3.5.5 Possessives of Abbreviations ......................................................................... 8 3.5.6 Articles with Abbreviations ............................................................................. 8 3.5.6.1 Definite Article ................................................................................................ 8 3.5.6.2 Indefinite Articles ............................................................................................ 9 3.5.7 Periods, Spaces, and Mixed Cases with Abbreviations .................................. 9 3.6 Contractions ................................................................................................. 10 3.7 Pronouns...................................................................................................... 10 3.7.1 Use of Pronouns .......................................................................................... 10 3.7.2 Problems with Pronouns and Gender ........................................................... 11 3.8 Attributive Nouns .......................................................................................... 11 3.8.1 Excessive Consecutive Nouns ..................................................................... 11 3.8.2 Singular vs. Plural Attributive Nouns ............................................................ 12 3.9 Compound Words and Phrases ................................................................... 12 3.9.1 Compound Nouns ........................................................................................ 12 3.9.1.1 Nouns Combined with Adverbs .................................................................... 12 3.9.1.2 Process Nouns ............................................................................................. 13 3.9.1.3 Phrasal Nouns ............................................................................................. 13 3.9.2 Compound Verbs ......................................................................................... 13 3.9.3 Compound Adjectives .................................................................................. 14 3.9.4 Prefixes and Suffixes ................................................................................... 17 3.9.5 Suspending Hyphens ................................................................................... 18 3.10 Items in a Series .......................................................................................... 19 3.10.1 Simple Items ................................................................................................ 19 3.10.2 Complex Items ............................................................................................. 19 APPROVED FOR PUBLIC RELEASE — DISTRIBUTION IS UNLIMITED iii KSC-DF-107 Revision F 3.10.3 Inconsistently Modified Items ....................................................................... 20 3.10.4 Appositives in Items ..................................................................................... 21 3.11 Parallel Construction .................................................................................... 22 3.11.1 Parallel Grammatical Expression ................................................................. 22 3.11.2 Parallel Visual Arrangement ......................................................................... 22 3.11.2.1 Items in Running Paragraphs ....................................................................... 23 3.11.2.2 Outline Structure of Bulleted or Enumerated Lists ........................................ 23 3.11.2.3 Grammatical Structure of Bulleted or Enumerated Lists ............................... 25 3.12 Casing .......................................................................................................... 26 3.12.1 Sentence Case ............................................................................................ 26 3.12.2 Title Case ..................................................................................................... 27 3.13 Proprietary Names ....................................................................................... 28 3.14 E-Mail Addresses ......................................................................................... 28 3.15 Website Addresses ...................................................................................... 29 3.16 Numbers ...................................................................................................... 29 3.16.1 Countable Quantities .................................................................................... 29 3.16.2 Measured Quantities .................................................................................... 31 3.16.3 Fractions ...................................................................................................... 33 3.16.4 Percentages ................................................................................................. 34 3.16.5 Money .......................................................................................................... 35 3.16.6 Mathematical or Chemical Expressions in Running Text .............................. 35 3.16.7 Display Equations ........................................................................................ 36 3.16.8 Dates ........................................................................................................... 37 3.16.9 Ordinal Numbers .......................................................................................... 38 3.17 Figures and Their Titles ................................................................................ 38 3.18 Tables and Their Titles ................................................................................. 41 3.19 Writing and Formatting Definitions ............................................................... 44 3.20 Warnings, Cautions, and Notes .................................................................... 45 3.21 Treatment of Computer Interfaces ................................................................ 46 3.21.1 Screenshots ................................................................................................