We would like to tranform Visio 2013 files into a given XML data structure (XSD exists). The stencils used in the Visio file are limited / predefined. The target XML is expected to contain the elements contained in a specific Visio page, including their relative position and the relations between them. The size of the Visio file should not be a sicnificante limitation (>300 elements possible). The software is expected to be implemented in C#.