Master.MatchByName Property (Visio)
Determines how the application decides if a document master is already present when an instance of a master is dropped on the drawing page. It allows changes made to a document master to apply to new instances of the master, even if the instances are dragged from a stand-alone stencil file. Read/write.
Setting the MatchByName property is equivalent to selecting or clearing the Match master by name on drop check box in the Master Properties dialog box (right-click the master, point to Edit Master, and then click Master Properties on the shortcut menu).
Suppose you create an instance of a master from a stencil in a document (producing a local copy of the master in that document) and then make modifications to the document master (such as changing its fill color). If the MatchByName property of the document master is False, dragging the original master from the stand-alone stencil into the drawing creates an instance that has the stand-alone master's attributes and produces a second document master.
If the MatchByName property of the document master is True, dragging the original master from the stand-alone stencil into the drawing creates an instance that has the document master's attributes and doesn't produce a second document master.