The mood of command or entreaty – the mood of volition. The imperative, which is the mood of ascertaining of one’s will over another, is the normal mood for a command or a strong suggestion. When the Present Imperative is used as a command or strong suggestion, it denotes an appeal to continue, or keep on doing something that is already in progress. It may express an urgency to do it now.

The Prohibitive Imperative

This use differs from the “Imperative of Command” only in the presence of the negative μή. This use employs the Present Imperative to prohibit the continuation of an action already in progress. You are to “stop doing” something.

The Imperative of Entreaty

This use of the Imperative denotes a request. It does have the force of urgency.