Best practice: Punctuation

  • Be consistent with your use of punctuation.
  • Avoid using single quotation marks (').
  • Use a colon (:) to separate text (for example, "file size: 5 MB"). Do not use a colon to punctuate labels.
  • Use a serial comma (,) to separate the last item in a series of three or more items (for example, "Synchronize your contacts, appointments, memos, and tasks.").

Guidelines for using end punctuation

  • Use end punctuation for complete sentences.
  • Insert one space following end punctuation if your application displays multiple sentences.
  • Punctuate questions with a question mark (?).
  • Use an ellipsis (...) only to indicate that text is truncated.


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