This spell functions like [_sending_](/spells/sending), but the message can also contain a [_suggestion_](/spells/suggestion) (see the [_suggestion_](/spells/suggestion) spell), which the subject does its best to carry out. A successful Will save negates the [_suggestion_](/spells/suggestion) effect but not the contact itself. The _demand_, if received, is understood even if the subject's Intelligence score is as low as 1. If the message is impossible or meaningless according to the circumstances that exist for the subject at the time the _demand_ is issued, the message is understood but the [_suggestion_](/spells/suggestion) is ineffective. The _demand_'s message to the creature must be 25 words or less, including the [_suggestion_](/spells/suggestion). The creature can also give a short reply immediately.