1. An interactive manual system, comprising: a speech engine to receive and process speech from a user, convert the speech into a word sequence, and identify meaning structures from the word sequence; a structured manual including information related to an operation of a device; a visual model to relate a visual representation of the information; a dialog management arrangement to interpret the meaning structures in a context and to extract pertinent information and the visual representation from the structured manual and the visual model; and an output arrangement to output the information and visual representation.