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Use PREP and SDS to Explain Reasons or Summarize the Whole

Summary

Learn when to use PREP for supported points or SDS for an overview, with relevant details, clear subheadings, and necessary context for readers.

Published

Use PREP for Reasons and SDS for an Overview

Use PREP for a point supported by reasons and examples, or SDS for a summary, details, and another summary. (Waseda University: Presentation structures) Decide whether the reader needs a decision argument or an overview.

Preserve necessary context and practical next steps in either structure.

Support a Point with Reasons and Examples

PREP follows point, reason, example, point. Explain a selected design through its reason and an example of use.

W3C recommends clear, concise content. (W3C: Writing for web accessibility) Repeating the same point at length is unnecessary.

Give Details a Clear Place within an Overview

In SDS, introduce the overall summary, develop relevant details, and briefly return to the summary. A service overview can introduce scope before prices and signup information.

Group details under suitable subheadings and keep the final summary within explained content.

Repair Missing Context

Check unfamiliar terms and decision-relevant figures. Assess missing reasons and whether details can be found alongside the choice of format.

Keep public summaries consistent with detailed descriptions.

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Frequently asked questions

Q: What does SDS stand for?

A: Summary, details, summary.

Q: When is PREP useful?

A: For supporting one point with reasons and examples.

Q: Does format determine understanding?

A: Also provide unfamiliar context and necessary evidence.

Q: Should the ending introduce a new issue?

A: Briefly return to the points already developed.

Sources

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