Simple OSC Output/Input Examples (4.23.1)

Since i know openframeworks and processing i don’t think i need the course.
i watched the explanation of the node system. watch it at 1.5 speed tho or die of waiting. I have a better grasp now and i’l try again later this weekend.
i’d like to know how to just do it in code tho.
i dont understand the .ck file extention i thought unreal ws all c++ and i dont understand how to propperly ad it and use the output in other files or nodes.