The document discusses the imperative form in Spanish. The imperative is used to give orders, instructions, or warnings and is constructed without a subject. It can be affirmative, using the infinitive form of the verb, or negative, using "don't/do not" followed by the infinitive. The imperative is also used for invitations, tips, and asking for help. "Let's" can be used to include yourself and is constructed similarly but cannot be considered an order.