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https://msdn.microsoft.com/en-us/library/aa164138(v=office.10) See also https://msdn.microsoft.com/en-us/library/aa164137(v=office.10) Properties Methods Events
Represents a typeface that is either applied to text in a document or available for use on the system.
The default property of a Font object is Name.
A Font object maps its name (for example, "Arial") to the font ID (for example, 3) that Visio stores in a https://msdn.microsoft.com/en-us/library/aa165991(v=office.10) Font cell in a Character section of a shape whose text is formatted with that font. Font IDs can change when a document is opened on different systems or when fonts are installed or removed.