Comment 5 for bug 1086504

> Not tested with VST, VSS, VTX and VSDM formats.

Some VST files can be download from here:
<http://visio.microsoft.com/en-us/Samples_and_Downloads/Diagrams_and_Templates/>

I don't know whether how 'Templates' work in Visio, and what might be stored as parameterized info, nor whether it makes sense to open them in Inkscape as SVG - I simply added it for testing.

The few VSS files I found via Google all open empty for me in Inkscape, but I didn't test and compare with the output generated by the command line tools yet (vss2xhtml).