Microsoft Visio is a 2D-object drawing application, part of the Microsoft Office suite.
Months ago, the LibreOffice developers started the work on implementing a Micrososft Viso import filter, filter that, as its name says, allows users to import Visio-specific files directly into LibreOffice Draw (thus enlarging its supported file formats).
Nevertheless, while libvisio's initial implementation in LibreOffice 3.5 was successful, "the Visio story was far from finished".
