How I am import *.dyf to my revit

I am new commer in dynamo, there is a way for import *dyf to my revit ? because revit dynamo just support *.dll & *.ds thank you

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You add the location of your packages and custom nodes here.

Many thank mr Nick, you save my life, thank you so much

you can also just open a .dyf and it will be loaded into the library.