Free SDK: Visio SDK

Wow, is there a more ignored Office product than Visio?  Yes there is, Publisher.  But Visio is really cool and every time I show my stuff on Visio, everyone is impressed.  Students can get Visio from Dreamspark.com for no cost, and professors can get Visio from MSDNAA for no cost.

• https://msdn.microsoft.com/en-us/office/gg467341