Can someone explain how this works and when you you need to use this. I see that they are available for surface rough radial and flowline toolpath.

First time user... please bare with me if my questions are easy.. Trying to learn the 5 axis toolpaths on my own and do not understand some concepts and need some help - Using the old style 5 axis toolpaths, what does it mean to select geometry to " comp to surfaces" - What is the main difference between 4 axis and 5 axis ? Is it that the 5 axis is capable of extra rotation on a specific axis ? - I checked the FTP site for sample files for me to learn however I do not know which ones are correct or need to be modified ( To me almost all of them look good). I've checked the X2 MR2 folder and the X3). Can someone let me know which files I can use ?