Abstract: The present invention provides a mind mapping system that supports at least two types of topics: (1) topics that primarily provide a blank space in which text and graphic elements can be inserted by the user and (2) topics that operate as components with predefined behavior for the display of a certain kind of content. The first type of topic is well-known in the art, but the second type is novel. The second type of topic enables users to easily display, view and/or manipulate certain kinds of content within a topic. Examples of the second type of topic include topics that operate as video players for the display of video data, topics that operate as spreadsheet applications for the display of spreadsheet data, topics that operate as calculators for performing mathematical functions, and topics that act as interfaces to external systems, such as email systems, CAD systems, inventory/purchase order systems, and contact-management systems.