This document discusses the causative use of the verb "have" where someone causes something to happen to an object or event but does not necessarily perform the action themselves. It can be used with any tense of "have" and expresses that something was done for or to the subject by another party, such as "I had my hair cut" or "We've just had our washing machine repaired." The structure is also used for unwanted events outside one's control, like "John had his car stolen last week." The verb "get" can also be used in place of "have" in a more informal way, such as "Where did you get your photos developed?".