A global map provides a picture of the entire network of links and nodes. To be useful, this must be depicted graphically, and allow the reader to move and size the view. In most systems, readers may select a new node to make it current.
Global maps are of limited utility.
Since most readers cannot readily understand a diagram with hundreds of crisscrossing interconnections, the problem of distilling or summarizing the information must be addressed. For this reason, the global map was not implemented in released versions of InterMedia.