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Writing Guide with Handbook

8.6 Editing Focus: Commas with Nonessential and Essential Information

Writing Guide with Handbook8.6 Editing Focus: Commas with Nonessential and Essential Information
  1. Preface
  2. The Things We Carry: Experience, Culture, and Language
    1. Unit Introduction
    2. 1 The Digital World: Building on What You Already Know to Respond Critically
      1. Introduction
      2. 1.1 "Reading" to Understand and Respond
      3. 1.2 Social Media Trailblazer: Selena Gomez
      4. 1.3 Glance at Critical Response: Rhetoric and Critical Thinking
      5. 1.4 Annotated Student Sample: Social Media Post and Responses on Voter Suppression
      6. 1.5 Writing Process: Thinking Critically About a “Text”
      7. 1.6 Evaluation: Intention vs. Execution
      8. 1.7 Spotlight on … Academia
      9. 1.8 Portfolio: Tracing Writing Development
      10. Further Reading
      11. Works Cited
    3. 2 Language, Identity, and Culture: Exploring, Employing, Embracing
      1. Introduction
      2. 2.1 Seeds of Self
      3. 2.2 Identity Trailblazer: Cathy Park Hong
      4. 2.3 Glance at the Issues: Oppression and Reclamation
      5. 2.4 Annotated Sample Reading from The Souls of Black Folk by W. E. B. Du Bois
      6. 2.5 Writing Process: Thinking Critically about How Identity Is Constructed Through Writing
      7. 2.6 Evaluation: Antiracism and Inclusivity
      8. 2.7 Spotlight on … Variations of English
      9. 2.8 Portfolio: Decolonizing Self
      10. Further Reading
      11. Works Cited
    4. 3 Literacy Narrative: Building Bridges, Bridging Gaps
      1. Introduction
      2. 3.1 Identity and Expression
      3. 3.2 Literacy Narrative Trailblazer: Tara Westover
      4. 3.3 Glance at Genre: The Literacy Narrative
      5. 3.4 Annotated Sample Reading: from Narrative of the Life of Frederick Douglass by Frederick Douglass
      6. 3.5 Writing Process: Tracing the Beginnings of Literacy
      7. 3.6 Editing Focus: Sentence Structure
      8. 3.7 Evaluation: Self-Evaluating
      9. 3.8 Spotlight on … The Digital Archive of Literacy Narratives (DALN)
      10. 3.9 Portfolio: A Literacy Artifact
      11. Further Reading
      12. Works Cited
      13. Works Consulted
  3. Bridging the Divide Between Personal Identity and Academia
    1. Unit Introduction
    2. 4 Memoir or Personal Narrative: Learning Lessons from the Personal
      1. Introduction
      2. 4.1 Exploring the Past to Understand the Present
      3. 4.2 Memoir Trailblazer: Ta-Nehisi Coates
      4. 4.3 Glance at Genre: Conflict, Detail, and Revelation
      5. 4.4 Annotated Sample Reading: from Life on the Mississippi by Mark Twain
      6. 4.5 Writing Process: Making the Personal Public
      7. 4.6 Editing Focus: More on Characterization and Point of View
      8. 4.7 Evaluation: Structure and Organization
      9. 4.8 Spotlight on … Multilingual Writers
      10. 4.9 Portfolio: Filtered Memories
      11. Further Reading
      12. Works Cited
    3. 5 Profile: Telling a Rich and Compelling Story
      1. Introduction
      2. 5.1 Profiles as Inspiration
      3. 5.2 Profile Trailblazer: Veronica Chambers
      4. 5.3 Glance at Genre: Subject, Angle, Background, and Description
      5. 5.4 Annotated Sample Reading: “Remembering John Lewis” by Carla D. Hayden
      6. 5.5 Writing Process: Focusing on the Angle of Your Subject
      7. 5.6 Editing Focus: Verb Tense Consistency
      8. 5.7 Evaluation: Text as Personal Introduction
      9. 5.8 Spotlight on … Profiling a Cultural Artifact
      10. 5.9 Portfolio: Subject as a Reflection of Self
      11. Works Cited
    4. 6 Proposal: Writing About Problems and Solutions
      1. Introduction
      2. 6.1 Proposing Change: Thinking Critically About Problems and Solutions
      3. 6.2 Proposal Trailblazer: Atul Gawande
      4. 6.3 Glance at Genre: Features of Proposals
      5. 6.4 Annotated Student Sample: “Slowing Climate Change” by Shawn Krukowski
      6. 6.5 Writing Process: Creating a Proposal
      7. 6.6 Editing Focus: Subject-Verb Agreement
      8. 6.7 Evaluation: Conventions, Clarity, and Coherence
      9. 6.8 Spotlight on … Technical Writing as a Career
      10. 6.9 Portfolio: Reflecting on Problems and Solutions
      11. Further Reading
      12. Works Cited
    5. 7 Evaluation or Review: Would You Recommend It?
      1. Introduction
      2. 7.1 Thumbs Up or Down?
      3. 7.2 Review Trailblazer: Michiko Kakutani
      4. 7.3 Glance at Genre: Criteria, Evidence, Evaluation
      5. 7.4 Annotated Student Sample: "Black Representation in Film" by Caelia Marshall
      6. 7.5 Writing Process: Thinking Critically About Entertainment
      7. 7.6 Editing Focus: Quotations
      8. 7.7 Evaluation: Effect on Audience
      9. 7.8 Spotlight on … Language and Culture
      10. 7.9 Portfolio: What the Arts Say About You
      11. Further Reading
      12. Works Cited
    6. 8 Analytical Report: Writing from Facts
      1. Introduction
      2. 8.1 Information and Critical Thinking
      3. 8.2 Analytical Report Trailblazer: Barbara Ehrenreich
      4. 8.3 Glance at Genre: Informal and Formal Analytical Reports
      5. 8.4 Annotated Student Sample: "U.S. Response to COVID-19" by Trevor Garcia
      6. 8.5 Writing Process: Creating an Analytical Report
      7. 8.6 Editing Focus: Commas with Nonessential and Essential Information
      8. 8.7 Evaluation: Reviewing the Final Draft
      9. 8.8 Spotlight on … Discipline-Specific and Technical Language
      10. 8.9 Portfolio: Evidence and Objectivity
      11. Further Reading
      12. Works Cited
    7. 9 Rhetorical Analysis: Interpreting the Art of Rhetoric
      1. Introduction
      2. 9.1 Breaking the Whole into Its Parts
      3. 9.2 Rhetorical Analysis Trailblazer: Jamil Smith
      4. 9.3 Glance at Genre: Rhetorical Strategies
      5. 9.4 Annotated Student Sample: “Rhetorical Analysis: Evicted by Matthew Desmond” by Eliana Evans
      6. 9.5 Writing Process: Thinking Critically about Rhetoric
      7. 9.6 Editing Focus: Mixed Sentence Constructions
      8. 9.7 Evaluation: Rhetorical Analysis
      9. 9.8 Spotlight on … Business and Law
      10. 9.9 Portfolio: How Thinking Critically about Rhetoric Affects Intellectual Growth
      11. Further Reading
      12. Works Cited
    8. 10 Position Argument: Practicing the Art of Rhetoric
      1. Introduction
      2. 10.1 Making a Case: Defining a Position Argument
      3. 10.2 Position Argument Trailblazer: Charles Blow
      4. 10.3 Glance at Genre: Thesis, Reasoning, and Evidence
      5. 10.4 Annotated Sample Reading: "Remarks at the University of Michigan" by Lyndon B. Johnson
      6. 10.5 Writing Process: Creating a Position Argument
      7. 10.6 Editing Focus: Paragraphs and Transitions
      8. 10.7 Evaluation: Varied Appeals
      9. 10.8 Spotlight on … Citation
      10. 10.9 Portfolio: Growth in the Development of Argument
      11. Further Reading
      12. Works Cited
    9. 11 Reasoning Strategies: Improving Critical Thinking
      1. Introduction
      2. 11.1 Developing Your Sense of Logic
      3. 11.2 Reasoning Trailblazer: Paul D. N. Hebert
      4. 11.3 Glance at Genre: Reasoning Strategies and Signal Words
      5. 11.4 Annotated Sample Reading: from Book VII of The Republic by Plato
      6. 11.5 Writing Process: Reasoning Supported by Evidence
      7. Further Reading
      8. Works Cited
    10. 12 Argumentative Research: Enhancing the Art of Rhetoric with Evidence
      1. Introduction
      2. 12.1 Introducing Research and Research Evidence
      3. 12.2 Argumentative Research Trailblazer: Samin Nosrat
      4. 12.3 Glance at Genre: Introducing Research as Evidence
      5. 12.4 Annotated Student Sample: "Healthy Diets from Sustainable Sources Can Save the Earth" by Lily Tran
      6. 12.5 Writing Process: Integrating Research
      7. 12.6 Editing Focus: Integrating Sources and Quotations
      8. 12.7 Evaluation: Effectiveness of Research Paper
      9. 12.8 Spotlight on … Bias in Language and Research
      10. 12.9 Portfolio: Why Facts Matter in Research Argumentation
      11. Further Reading
      12. Works Cited
    11. 13 Research Process: Accessing and Recording Information
      1. Introduction
      2. 13.1 The Research Process: Where to Look for Existing Sources
      3. 13.2 The Research Process: How to Create Sources
      4. 13.3 Glance at the Research Process: Key Skills
      5. 13.4 Annotated Student Sample: Research Log
      6. 13.5 Research Process: Making Notes, Synthesizing Information, and Keeping a Research Log
      7. 13.6 Spotlight on … Ethical Research
      8. Further Reading
      9. Works Cited
    12. 14 Annotated Bibliography: Gathering, Evaluating, and Documenting Sources
      1. Introduction
      2. 14.1 Compiling Sources for an Annotated Bibliography
      3. 14.2 Glance at Form: Citation Style, Purpose, and Formatting
      4. 14.3 Annotated Student Sample: “Healthy Diets from Sustainable Sources Can Save the Earth” by Lily Tran
      5. 14.4 Writing Process: Informing and Analyzing
      6. Further Reading
      7. Works Cited
    13. 15 Case Study Profile: What One Person Says About All
      1. Introduction
      2. 15.1 Tracing a Broad Issue in the Individual
      3. 15.2 Case Study Trailblazer: Vilayanur S. Ramachandran
      4. 15.3 Glance at Genre: Observation, Description, and Analysis
      5. 15.4 Annotated Sample Reading: Case Study on Louis Victor "Tan" Leborgne
      6. 15.5 Writing Process: Thinking Critically About How People and Language Interact
      7. 15.6 Editing Focus: Words Often Confused
      8. 15.7 Evaluation: Presentation and Analysis of Case Study
      9. 15.8 Spotlight on … Applied Linguistics
      10. 15.9 Portfolio: Your Own Uses of Language
      11. Further Reading
      12. Works Cited
  4. Navigating Rhetoric in Real Life
    1. Unit Introduction
    2. 16 Print or Textual Analysis: What You Read
      1. Introduction
      2. 16.1 An Author’s Choices: What Text Says and How It Says It
      3. 16.2 Textual Analysis Trailblazer: bell hooks
      4. 16.3 Glance at Genre: Print or Textual Analysis
      5. 16.4 Annotated Student Sample: "Artists at Work" by Gwyn Garrison
      6. 16.5 Writing Process: Thinking Critically About Text
      7. 16.6 Editing Focus: Literary Works Live in the Present
      8. 16.7 Evaluation: Self-Directed Assessment
      9. 16.8 Spotlight on … Humanities
      10. 16.9 Portfolio: The Academic and the Personal
      11. Further Reading
      12. Works Cited
    3. 17 Image Analysis: What You See
      1. Introduction
      2. 17.1 “Reading” Images
      3. 17.2 Image Trailblazer: Sara Ludy
      4. 17.3 Glance at Genre: Relationship Between Image and Rhetoric
      5. 17.4 Annotated Student Sample: “Hints of the Homoerotic” by Leo Davis
      6. 17.5 Writing Process: Thinking Critically and Writing Persuasively About Images
      7. 17.6 Editing Focus: Descriptive Diction
      8. 17.7 Evaluation: Relationship Between Analysis and Image
      9. 17.8 Spotlight on … Video and Film
      10. 17.9 Portfolio: Interplay Between Text and Image
      11. Further Reading
      12. Works Cited
    4. 18 Multimodal and Online Writing: Creative Interaction between Text and Image
      1. Introduction
      2. 18.1 Mixing Genres and Modes
      3. 18.2 Multimodal Trailblazer: Torika Bolatagici
      4. 18.3 Glance at Genre: Genre, Audience, Purpose, Organization
      5. 18.4 Annotated Sample Reading: “Celebrating a Win-Win” by Alexandra Dapolito Dunn
      6. 18.5 Writing Process: Create a Multimodal Advocacy Project
      7. 18.6 Evaluation: Transitions
      8. 18.7 Spotlight on . . . Technology
      9. 18.8 Portfolio: Multimodalism
      10. Further Reading
      11. Works Cited
    5. 19 Scripting for the Public Forum: Writing to Speak
      1. Introduction
      2. 19.1 Writing, Speaking, and Activism
      3. 19.2 Podcast Trailblazer: Alice Wong
      4. 19.3 Glance at Genre: Language Performance and Visuals
      5. 19.4 Annotated Student Sample: “Are New DOT Regulations Discriminatory?” by Zain A. Kumar
      6. 19.5 Writing Process: Writing to Speak
      7. 19.6 Evaluation: Bridging Writing and Speaking
      8. 19.7 Spotlight on … Delivery/Public Speaking
      9. 19.8 Portfolio: Everyday Rhetoric, Rhetoric Every Day
      10. Further Reading
      11. Works Cited
    6. 20 Portfolio Reflection: Your Growth as a Writer
      1. Introduction
      2. 20.1 Thinking Critically about Your Semester
      3. 20.2 Reflection Trailblazer: Sandra Cisneros
      4. 20.3 Glance at Genre: Purpose and Structure
      5. 20.4 Annotated Sample Reading: “Don’t Expect Congrats” by Dale Trumbore
      6. 20.5 Writing Process: Looking Back, Looking Forward
      7. 20.6 Editing Focus: Pronouns
      8. 20.7 Evaluation: Evaluating Self-Reflection
      9. 20.8 Spotlight on … Pronouns in Context
      10. Further Reading
      11. Works Cited
  5. Handbook
  6. Index

Learning Outcomes

By the end of this section, you will be able to:

  • Distinguish between essential and nonessential information in sentences.
  • Use commas for clearer, more effective sentences.

A comma is a mark of separation. It alerts readers to a brief pause or pauses within a sentence that is part of your analytical report.

Nonessential and Essential information

Nonessential information refers to information within a sentence that is not necessary for the reader to understand its meaning. Essential information refers to information within a sentence that is necessary for the reader to understand its meaning.

Nonessential Information

Placing commas around a word or group of words within a sentence usually indicates that the information is not necessary for readers to understand the sentence’s meaning. In the example below, the underlined words refer to and explain the phrase current math curriculum, but they can be removed without changing the meaning of the sentence: the math curriculum currently in use isn’t meeting current needs. The information is interesting and perhaps useful, but it is “extra” and does not change the basic meaning of the sentence.

The current math curriculum, which was adopted by the school district 10 years ago, no longer meets the needs of the students.

Essential Information

Certain words in a sentence are often necessary for readers to understand its meaning. In the example below, the word current was removed from between the words The and math and replaced by the underlined words that tell readers which curriculum no longer meets students’ needs. It is essential because without it, confusion may arise about which math curriculum no longer meets students’ needs.

The math curriculum that the district adopted 10 years ago no longer meets the needs of the students.

To Comma or Not to Comma?

Place commas around nonessential information, but not around essential information. You can test whether information is nonessential by removing the information. If the meaning of the sentence is unchanged, the information is nonessential. If the meaning becomes too general or changes in any way, the information is essential. Often, nonessential information is introduced with the word which and essential information with that.

Place Commas around Nonessential Information

Place commas around information that is not essential to the meaning of a sentence, as illustrated in the following sentences:

  • The entire math department, which consists of 16 teachers and 7 staff members, has requested a review of the curriculum.
  • The department chair, who has led the math department for 11 years, has agreed to the teachers’ request.
  • The curriculum will become effective in June, when the school year is finished.

Do Not Place Commas around Essential Information

Do not place commas around information that is essential to the meaning of a sentence, as illustrated in the following sentences:

  • According to the department chair, the math curriculum needs to focus on skills that students need after high school graduation.
  • The math teachers who teach Algebra 1 and Algebra 2 have requested a review of the curriculum.
  • The teachers are concerned that students are not retaining what they have learned.
  • The department has consulted the curriculum expert Malcolm Green.

See Punctuation for more on commas.

Practice Using Commas

Read each of the following sentences. Decide whether the underlined portion of each sentence is nonessential or essential. Place commas before, after, or around the nonessential information as appropriate.

  1. The department has consulted the curriculum expert Malcolm Green whose textbook is widely used.
  2. Two members of the math department Janelle Brady and Tye Lavalle are retiring next year.
  3. The textbooks that are now in use are outdated.
  4. Students have given feedback on the online classes that have replaced in-person classes.
  5. The math department now offers more evening classes which attract more students and fewer summer classes.
  6. Several instructors who teach math also teach computer science classes.
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