A period is used at the end of an imperative sentence.
Answer : Not at all.
Explanation: A period is used at the end of an imperative sentence except if it is an exclamation or a question. Then we should use an exclamation point or a question mark. Then a period is unnecessary.
In Spanish we have to use an exclamation point at the beginning of an imperative sentence and at the end of an imperative sentence. ¡ !
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