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Microsoft® Manual of Style, Fourth Edition by Microsoft Corporation

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Capitalization

In general, follow the capitalization rules of Standard English. The following guidelines discuss the specific capitalization guidelines that are used in Microsoft content:

  • Never use all uppercase for emphasis. Use sentence structure for emphasis instead. It’s best to avoid formatting for emphasis, but if you must use formatting for emphasis, use italic formatting instead of all uppercase.

  • Follow the capitalization guidelines or conventions for software or for a specific product or service as necessary, such as case-sensitive keywords or product or service names with internal capitalization.

  • Do not capitalize the spelled-out form of an acronym unless the spelled-out form is a proper noun. When in doubt, see the Acronyms and other abbreviations ...

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