: As a new style of effective information presentations and a new multimodal information content production on the World Wide Web (WWW), multimodal presentation using interactive life-like agents with verbal conversation capability appears to be very attractive and important. For this purpose, we have developed Multimodal Presentation Markup Language (MPML), which allows many users to write attractive multimodal presentations easily. MPML is a markup language conformed to Extensible Markup Language (XML). It supports functions for controlling verbal presentation and agent behavior. In this paper, we present the specification, related tools, and application of MPML when used as a tool for composing multimodal presentations on the WWW.