Page 479

Marking Punctuation
Period
A period is used to end a sentence. It is also used after initials, after abbreviations, and as a decimal point.
479.1 At the End of Sentences
A period is used to end a sentence that makes a statement, a request, or a mild command.
Homes in the future will have many high-tech features. (statement)
Set your skylights to darken during a sunny summer day or grow clear on a cold winter’s night. (request)
Don’t worry. (mild command)
Your robot housekeeper will cook your favorite meals as well as clean your room. (statement)