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

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.