Style Guide of Common Errors in English Grammar for Writers

colon

If the text after a colon is a full sentence, capitalize the first letter. Otherwise, do not.

correct: Cobra Commander issued a warning: Any passenger flights over Cobra Island will be shot down.

correct: Storm Shadow gathered the ingredients for his post-workout protein shake: milk, strawberries and Uncle McAwesome's Olde Thyme Bulk Powder.

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