How to Use Track Changes and Commenting Like a Pro

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-27

Quick Answer

• Use Track Changes for every edit you make to a shared document so reviewers can see exactly what changed and approve or reject each modification individually.
• Reply to every comment directly in the document using the comment reply function, then mark the thread resolved only after the issue is fully addressed.
• Run Word's Compare feature on the final version against the original to catch any missed edits or accidental deletions before submission.

Why Medical Writers Need a Structured Review Workflow

Medical writing sits at the intersection of scientific accuracy, regulatory compliance, and clear communication. The U.S. Bureau of Labor Statistics groups medical writers and science writers together, noting that these professionals typically need a bachelor's degree and often combine writing skill with specialized knowledge in fields like medicine or biology. The work involves translating complex scientific information into documents that serve different audiences, from clinical study reports to patient education materials.

The review process for medical documents rarely involves a single pass by one person. A typical manuscript or regulatory document moves through multiple reviewers, each with a different role. A biostatistician checks the numbers. A clinical scientist verifies the interpretation. A regulatory affairs specialist confirms the document meets submission requirements. A medical editor polishes the language. Each of these reviewers will mark up the document differently, and their feedback often overlaps or conflicts.

The Occupational Outlook Handbook describes medical and science writers as professionals who communicate scientific information to various audiences, including technical and general readers. This description understates the coordination burden. When five reviewers return marked-up versions of the same document, the medical writer becomes a traffic controller, beyond an author. Without a structured workflow, the writer faces the impossible task of merging multiple sets of changes while tracking who said what and which edits were accepted.

The core problem is that most medical writers learn Track Changes by trial and error. They know how to turn the feature on and off, but they have never developed a system for managing the chaos of multi-reviewer feedback. This article provides that system, built on the features that Microsoft Word has offered for decades and adapted to the specific demands of medical and scientific writing.

At a Glance

Core Principles of Track Changes

Understand What Track Changes Actually Records

Track Changes in Microsoft Word records every insertion, deletion, formatting change, and comment made while the feature is active. Each change is attributed to the user whose name appears in the Word application settings. This attribution matters in medical writing because reviewers need to know who made each edit, especially when questions arise about the accuracy of a specific change.

The feature works by storing change information in the document file itself. When you accept a change, the text becomes permanent. When you reject a change, the text returns to its previous state. Comments exist separately from tracked changes and can be replied to, resolved, or deleted without affecting the text.

For medical writers, the critical principle is that Track Changes creates an audit trail. Regulatory agencies and journal editors may ask to see how a document evolved. The audit trail shows which reviewer requested which modification and whether the author incorporated it. This transparency protects both the writer and the reviewers.

Set Up Your Document Correctly Before You Start

Before you begin editing, verify that Track Changes is enabled. In Word, this appears on the Review tab. The button highlights when the feature is active. A common failure occurs when a writer assumes Track Changes is on but has accidentally turned it off, resulting in silent edits that no one can see or trace.

Check your user name in Word settings. The name you enter appears on every tracked change and comment. Medical writing teams should agree on a naming convention, typically first name and last name, so reviewers can identify who made each edit. Some organizations use initials or role-based names, such as "Stat Reviewer" or "Regulatory Editor."

Set the markup view to show all markup. Word offers several display options, including simple markup, all markup, and no markup. For active editing, all markup shows every change and comment. Simple markup hides the details and shows only a vertical line in the margin, which is useful for reading but not for editing.

Distinguish Between Track Changes and Comments

Track Changes modifies the text itself. Comments attach notes to specific text without changing the document. Both tools serve different purposes in the review process.

Use Track Changes for edits you want to make directly, such as correcting a spelling error, rewording a sentence, or moving a paragraph. Use comments for questions, suggestions, and requests for clarification. For example, a reviewer might comment, "Please verify this dosage against the protocol" instead of changing the dosage directly. This distinction keeps the document text clean while capturing the reviewer's concern.

The American Society for Microbiology career resources emphasize that scientific professionals need strong communication skills, including the ability to give and receive feedback constructively. Comments are the primary vehicle for this feedback in document review. A well-written comment explains the issue, suggests a direction, and invites dialogue. A poorly written comment is vague, accusatory, or unactionable.

Building a Multi-Reviewer Workflow

Step 1: Establish the Review Protocol Before Sending the Document

The most important decisions happen before the document goes out for review. Define the review timeline, the specific questions you want each reviewer to answer, and the format for feedback. Send the document with Track Changes enabled and instruct reviewers to use comments for questions and Track Changes for edits.

Create a review matrix that lists each reviewer, their role, the sections they own, and the deadline for their feedback. This matrix becomes your tracking tool throughout the review cycle. The National Institutes of Health Office of Intramural Training and Education describes mentoring and professional development as ongoing processes that benefit from clear expectations and structured feedback. The same principle applies to document review.

Step 2: Collect and Consolidate Feedback

When reviewers return their marked-up documents, resist the urge to start accepting changes immediately. First, consolidate all feedback into a single master document. If reviewers worked in parallel, use Word's Compare feature to merge their versions.

The Compare feature in Word identifies differences between two documents and displays them as tracked changes in a third document. To use it, open the Review tab, select Compare, and choose the original document and the revised document. Word generates a new document showing every difference as a tracked change.

For multiple parallel reviewers, compare each revised version against the original, then merge the results. This process is iterative. Compare reviewer A's version against the original to produce a combined document. Then compare reviewer B's version against the original and merge the changes into the combined document. The result shows all changes from both reviewers, attributed to each reviewer.

Step 3: Review Changes Systematically

Work through the consolidated document from beginning to end. For each tracked change, decide whether to accept or reject it. Read the surrounding context before making the decision. A change that looks correct in isolation may conflict with content elsewhere in the document.

Use the Review pane to see a list of all changes and comments. This list helps you track your progress and ensures you do not miss anything. Word also provides navigation arrows that move you from one change to the next.

For each comment, determine whether it requires action. Some comments ask questions that you can answer directly in the reply. Others request changes that you make using Track Changes. After you address the comment, reply to it and mark it resolved. Resolving a comment does not delete it, it keeps the thread visible but indicates that the issue has been addressed.

Step 4: Respond to Every Comment

Medical reviewers expect a response to every comment they make. A comment that receives no reply leaves the reviewer wondering whether their concern was seen. Use the reply function in Word to respond directly to each comment thread.

A good reply states what you did in response to the comment. For example, "I updated the dosage to 500 mg per the protocol amendment" or "I revised this sentence to clarify the inclusion criteria." If you disagree with the comment, explain your reasoning and provide evidence for your position. The goal is a documented dialogue that shows the review process was thorough and responsive.

The National Science Foundation careers page describes scientific work as collaborative and iterative, with professionals expected to incorporate feedback from colleagues and stakeholders. This description applies directly to medical writing, where the review process is a formalized version of scientific collaboration.

Step 5: Run a Final Quality Check

After you have accepted or rejected every change and resolved every comment, run a final quality check. Use the Compare feature to compare your final document against the original version. This comparison shows every difference between the two documents, allowing you to verify that all intended changes were incorporated and no unintended changes slipped through.

Check the document properties for hidden tracked changes. In Word, the Review tab shows the number of tracked changes and comments remaining. If the count is not zero, you have unresolved items. Also check for comments that were replied to but not resolved, as these may still appear in the final document.

Using Word's Compare Feature Effectively

When to Use Compare

The Compare feature serves two main purposes in medical writing. First, it merges parallel reviews from multiple reviewers. Second, it verifies the final document against the original. Both uses require the same basic procedure, but the context differs.

For merging parallel reviews, you need the original document and each reviewer's marked-up version. The original document is the version you sent out for review. Each reviewer's version is the document they returned. Compare each reviewer's version against the original to generate a combined document showing all changes.

For final verification, you need the original document and your final version. The comparison shows every difference, including changes you made intentionally and any accidental modifications. This verification step catches errors that might otherwise reach the final submission.

Limitations of Compare

The Compare feature has limitations that medical writers should understand. It compares text at the character level, so it may flag formatting changes that are not meaningful. It also treats moved text as a deletion and an insertion, which can make the comparison output look more complex than the actual change.

Compare does not merge comments from multiple documents. If two reviewers commented on the same text, the merged document may show only one set of comments. You may need to manually copy comments from the original reviewer documents into the merged document.

The Compare feature also requires that the documents share a common origin. If a reviewer reformatted the entire document or changed the styles, Compare may produce confusing results. Instruct reviewers to use Track Changes instead of making silent formatting changes.

Practical Steps for Compare

To merge two documents, open Word and go to the Review tab. Select Compare and choose Compare Documents. Select the original document and the revised document. Choose the settings for what to compare, such as text, comments, and formatting. Word generates a new document with the differences shown as tracked changes.

Review the merged document carefully. The comparison output can be noisy, especially for long documents. Work through the changes systematically, accepting or rejecting each one. Pay special attention to changes that appear as deletions, as these may represent content that a reviewer removed intentionally.

Organizing Your Review Process

Create a Comment Log

A comment log is a separate document that tracks every comment, its status, and the response. This log serves as a project management tool and a record of the review process. For each comment, record the reviewer name, the section of the document, the comment text, your response, and the status.

The comment log is especially valuable for documents with many reviewers or multiple review rounds. It provides a summary view that the document itself cannot offer. When a reviewer asks about the status of their feedback, you can consult the log and give an immediate answer.

Use Styles and Formatting Consistently

Medical documents often have complex formatting requirements, including specific heading styles, table formats, and citation styles. When you use Track Changes, formatting changes appear as tracked changes, which can clutter the review view.

To minimize formatting noise, agree with reviewers on which formatting changes require tracking and which can be made silently. For example, correcting a heading style might be a silent change, while changing the wording of a heading requires tracking. Document these agreements in the review protocol.

Manage Multiple Review Rounds

Most medical documents go through multiple review rounds. The first round addresses substantive scientific and clinical issues. The second round addresses the revisions from the first round. The third round may focus on editorial polish.

For each round, start with a clean version of the document. Accept all changes from the previous round before sending the document out again. This practice ensures that reviewers see the current state of the document, not a version cluttered with accepted changes from earlier rounds.

The Association of American Veterinary Medical Colleges describes the veterinary profession as one that requires strong communication and collaboration skills, with professionals expected to work effectively in teams. This description applies to veterinary medical writing as well, where the review process involves multiple stakeholders with different expertise.

Common Failure Patterns in Track Changes Management

Silent Edits

Silent edits occur when a writer or reviewer makes changes without Track Changes enabled. These edits are invisible to the review process and can create discrepancies between versions. The final document may contain changes that no one reviewed or approved.

Prevent silent edits by checking that Track Changes is enabled before making any changes. If you receive a document from a reviewer and suspect silent edits, use the Compare feature to check the document against the version you sent. The comparison will reveal any differences, including those made without tracking.

Unresolved Comments

Unresolved comments remain in the document after the review process ends. They may contain questions that were never answered or requests that were never addressed. In a final submission, unresolved comments suggest an incomplete review process.

Check the comment count before finalizing any document. Word displays the number of comments in the Review tab. If the count is not zero, review each remaining comment and address it. Resolve comments only after the issue is fully addressed.

Accepting Changes Without Reading

The fastest way to lose control of a document is to accept all changes without reading them. This practice can incorporate errors, conflicting edits, or unintended modifications. It also bypasses the writer's responsibility to evaluate each change critically.

Work through changes one at a time. Read the surrounding context before accepting or rejecting. If a change conflicts with another change elsewhere in the document, investigate before making a decision. The time spent reviewing changes carefully is less than the time required to fix errors after submission.

Version Confusion

Version confusion occurs when multiple versions of a document circulate without clear naming conventions. Reviewers may edit an outdated version, or the writer may merge changes from the wrong version. The result is lost feedback and wasted effort.

Use a consistent naming convention for document versions. Include the date and a version number in the file name, such as "Protocol_Draft_v2_20250115.docx." Maintain a version history that records the date, the changes made, and the person who made them. This history provides context for the current version and helps resolve questions about what changed and when.

Records and Measurements for Review Quality

Track Review Turnaround Time

Review turnaround time measures how long each reviewer takes to return their feedback. This metric helps you plan future review cycles and identify reviewers who consistently miss deadlines. Record the date you sent the document and the date each reviewer returned it.

The Occupational Outlook Handbook notes that medical and science writers often work under tight deadlines and must manage multiple projects simultaneously. Tracking turnaround time helps you allocate your own time and communicate realistic expectations to reviewers.

Measure Comment Resolution Rate

Comment resolution rate measures the percentage of comments that receive a response and are resolved. A high resolution rate indicates a thorough review process. A low rate suggests that comments are being ignored or forgotten.

To measure this rate, count the total comments and the number resolved. Divide resolved by total and multiply by 100. Track this metric across review rounds to identify patterns. If the resolution rate drops in later rounds, investigate whether the review process is becoming less rigorous.

Document Error Rates After Review

The final quality check using Compare can reveal errors that survived the review process. Track the number of errors found in the final check and the type of each error. Common categories include missed edits, conflicting changes, formatting inconsistencies, and unresolved comments.

This error log serves two purposes. It identifies weaknesses in the review process that need correction. It also provides evidence of the review quality for regulatory submissions or journal requirements.

Welfare and Safety Context for Medical Writing

Patient Safety Depends on Accurate Documents

Medical writing directly affects patient safety. Clinical study reports, protocols, and patient information materials must be accurate because they inform decisions about treatment and care. An error in a dosage, a contraindication, or a warning can have serious consequences.

The review process is a safety control. Each reviewer checks the document from their professional perspective, catching errors that others might miss. The medical writer's role is to ensure that the review process is thorough and that every change is evaluated critically.

Regulatory Compliance Requires an Audit Trail

Regulatory agencies expect documentation of the review process. The audit trail provided by Track Changes and comments demonstrates that the document was reviewed by qualified professionals and that their feedback was incorporated. This documentation protects the organization in the event of an audit or inquiry.

The U.S. Bureau of Labor Statistics notes that medical and science writers must be able to work with complex information and present it clearly. In a regulatory context, this clarity extends to the review process itself. A well-documented review process is as important as a well-written document.

Escalation Criteria for Review Conflicts

When reviewers disagree on a substantive issue, the medical writer should escalate the conflict instead of making an arbitrary decision. Escalation criteria include disagreements about scientific accuracy, regulatory requirements, or patient safety. The writer should document the disagreement, present both positions, and seek a decision from the appropriate authority.

The National Institutes of Health Office of Intramural Training and Education describes the importance of seeking guidance from mentors and supervisors when facing complex professional challenges. This guidance applies to review conflicts, where the writer should not bear the sole responsibility for resolving disagreements among experts.

Professional Development for Medical Writers

Build Skills Through Practice and Feedback

Medical writing skills develop through practice and structured feedback. The American Society for Microbiology career resources emphasize the importance of continuous learning and professional development for scientific careers. For medical writers, this learning includes mastering document review tools and processes.

Seek opportunities to participate in review processes, even in a supporting role. Observing how experienced medical writers manage feedback teaches practical skills that no course can provide. Ask for feedback on your own review management and incorporate that feedback into your next project.

Understand the Career Landscape

The Occupational Outlook Handbook provides information about the education and training required for medical and science writing careers. Most positions require a bachelor's degree, and many employers prefer candidates with specialized knowledge in a scientific or medical field. Experience with regulatory documents and clinical research is valuable.

The National Science Foundation careers page describes the range of scientific and technical roles available in a federal research organization. While not specific to medical writing, this information illustrates the breadth of scientific communication careers and the skills they require.

Pursue Relevant Training and Certification

Professional certification for medical writers is available through organizations that serve the field. Certification typically requires a combination of education, experience, and examination. The Occupational Outlook Handbook notes that professional certification can demonstrate competence and may improve job prospects.

The Association of American Veterinary Medical Colleges describes the education and training pathway for veterinary professionals. While this pathway is specific to veterinary medicine, it illustrates the value of structured professional development in scientific fields.

Frequently Asked Questions

How do I enable Track Changes in Microsoft Word?

Open the Review tab in Word and click the Track Changes button. The button highlights when the feature is active. Verify that your user name is correct in Word settings so your changes are attributed to you. Check the Review tab periodically to confirm Track Changes is still enabled, especially after opening or saving a document.

What is the difference between accepting and rejecting a tracked change?

Accepting a change makes it permanent in the document. Rejecting a change removes it and restores the original text. Both actions remove the change from the tracked changes list. The decision to accept or reject should be based on the accuracy and appropriateness of the change, not on the identity of the reviewer.

How do I reply to a comment in Word?

Select the comment you want to reply to and click the reply icon in the comment bubble. Type your response and press Enter. The reply appears in the comment thread. Use replies to answer questions, explain your actions, or request clarification. Mark the comment resolved only after the issue is fully addressed.

What does the Compare feature do in Word?

The Compare feature identifies differences between two documents and displays them as tracked changes in a new document. It is used to merge parallel reviews from multiple reviewers and to verify the final document against the original. The comparison output requires careful review because it may include formatting changes and moved text.

How do I merge feedback from multiple reviewers?

Use the Compare feature to merge each reviewer's version against the original document. Start with the original and compare the first reviewer's version. Then compare the second reviewer's version against the original and merge the changes into the combined document. Repeat for each reviewer. Review the merged document carefully for conflicting changes.

What should I do if reviewers make conflicting changes?

Investigate the conflict before making a decision. Read the surrounding context and determine which change is more accurate or appropriate. If the conflict involves a substantive scientific or regulatory issue, escalate it to the appropriate authority. Document the conflict and the resolution in your comment log.

How do I check for unresolved comments before submitting?

Look at the Review tab in Word, which displays the number of comments and tracked changes in the document. If the count is not zero, review each remaining item. Reply to and resolve every comment. Accept or reject every tracked change. Run the Compare feature against the original to verify the final document.

What is the best way to track review progress across multiple rounds?

Maintain a comment log that records every comment, its status, and the response. Use a consistent naming convention for document versions, including the date and version number. Accept all changes from the previous round before sending the document out again. Track review turnaround time and comment resolution rate to measure the quality of the review process.

Using the Evidence

Related Articles

• Medical Writer Career Path: Skills, Roles, and How to Start
• Medical Writer Jobs: Career Path, Skills, and Remote Opportunities
• california medical
• medical certificate
• California Medical Association

References and Further Reading

• Occupational Outlook Handbook. U.S. Bureau of Labor Statistics.
• O*NET OnLine. U.S. Department of Labor.
• Office of Intramural Training and Education. National Institutes of Health.
• Careers at NSF. U.S. National Science Foundation.
• Career Services. American Society for Microbiology.
• AAVMC Career Resources. Association of American Veterinary Medical Colleges.
• NCBI Literature Resources. National Center for Biotechnology Information.
• PubMed. National Library of Medicine.

This article is educational and does not replace institutional policy, professional advice, or applicable safety and regulatory requirements.