With Filestar you get 30 different skills for working productively with Visio Macro-Enabled Drawing (.vsdm) files.
About .Vsdm
Name
Visio Macro-Enabled Drawing
Extension
.vsdm
Category
Vector Image
Developer
Microsoft
Description
VSDM files are based on the Open Packaging Conventions and XML and developers can benefit from this format by learning how to work with these file programmatically. The format inherits many of the same XML structures as its parts from the Visio XML Drawing file format (.vdx). Interoperability with Visio files is greatly increased since third-party software can manipulate Visio files at a file format level.