Aperiod 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. ¡ !

Hope this helps!

when you are going to explain a procedure,   the first thing to do is to name the parts or the apparatus you are going to describe in terms of how it or they function. also it is important to know who is going to operate it and the abilities this man/woman requires to manage it.