The Complete Claude Guide
Chapter 05 · WEB

Preferences, instructions and writing style

Personal preferences describe how you generally want Claude to respond. Project instructions describe the work in that project. A chat request specifies the current task. Writing style affects presentation, not factual accuracy.

Verified against source on 2026-09-30

Video

Steps

  1. Inspect the personal preferences or instructions offered by your interface. Write a short testable rule: "Use plain English and keep product names unchanged."
  2. Put rules for one project in that project's instructions instead of applying them to your whole account. A fixed team report format is one example.
  3. If the interface offers style selection or creation, try it on sample text. Compare length, tone and structure. Make sure important caveats were not removed.
  4. When instructions conflict, clarify what the current task requires. Inspect the actual output. A saved setting is not proof it was followed in every response.
Common pitfall: Do not put passwords, customer details or secrets into preferences to avoid typing them again.
Hands-on exercise: Write one preference, test it with two different requests, then decide whether it should be a permanent rule.
Filmed demo · Video is added in the media phase

Recap

Comprehension check

Where should a format used by only one project go?

Recap

Official sources

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