Microsoft Visio is a commercial diagramming application that allows the user to create vector drawings and diagrams. The native diagram file type for Microsoft Visio is the VSD file type. However, Visio will also allow you to save a Visio diagram as an XML file. A Visio file in XML format may be identified by the file extension of VDX. When you save a Visio drawing in XML format, all stencils and addi-ins are saved in the the XML drawing file. Writer Bio
