Hasta La Motion!

Hi, i’m new to Nuke coming over from AE and have been looking up tutorials. But I can’t seem to find anything on exporting and the user guide hasn’t helped. I simply want to export my nuke project so i can edit it into FCP or avid but can’t work out how to do that as the editing programs don’t recognise the .nk file extension. How can you export as something else that can be recognised by editing programs? I’ve tried just typing in a different extension when saving but that doesn’t work. Would this have anything to do with that i’ve got the ple version of nuke?