Imperative mood is mood that signals directive modality, especially in commands. Its use may be extended to signal permission.
An imperative verb is typically not inflected for most of the grammatical categories associated with verbs in a language, especially tense and person.
(English)
Here is an example of a construction indicating imperative mood:
This page is an extract from theLinguaLinks Library. Version 5.0 published on CD-ROM by SIL International, 2003.