Imperative

a type of sentence structure that expresses an order.

Imperatives are often called commands.

Compare:
 * Declarative
 * Interrogative
 * Exclamative

Structure
Imperatives usually do not contain an explicit subject.

The verbal will be in the uninflected basic form.

Uses
Crystal, David. Rediscover Grammar, page 52.

Bruntt, Karen and Bryanne, Ulla. Handbook for Grammar Detectives, page 113.