Highlighting Key Lines in Code Blocks records a distinct Microsoft Learn authoring convention and keeps it scoped to that documentation environment rather than presenting it as a universal grammar rule.
ReviewedEvidence1 sourceSectionWriting & Style
Quick answer
Use supported code-snippet highlighting when readers need attention drawn to specific lines instead of relying on decorative screenshots.
Key details
Core Issuehighlighting key lines in code blocks
RegisterMicrosoft Learn technical documentation
Important caveats
Scope Boundary
This page covers the Microsoft Learn code-block authoring task; it does not prescribe highlighting where no lines need special attention.
Further guidance
Content
Use supported code-snippet highlighting when readers need attention drawn to specific lines instead of relying on decorative screenshots.
Purpose
Keep technical documentation readable, reusable, and unambiguous for readers while following current Microsoft Learn contributor conventions.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
How to include code in docs — Microsoft Learn Contributor Guide↗ (opens in a new tab)Microsoft · Current Microsoft Learn contributor guidance on including code in documentation, including link/code styling, code-block quality checks, screenshots, validation, highlighting, scrollability, bad-code labeling, and in-repository snippet references.
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