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Re:Nano is no longer a GNU project by gargravarr on Wednesday June 22, 2016 @10:32AM (#11954235)
You forgot ESC after making changes ;)

nano file_foo

make changes

ctrl-O-Enter - save ctrl-X-Enter - exit

Simpler, I think?

Re:Nano is no longer a GNU project by eximius on Wednesday June 22, 2016 @11:00AM (#11954447)
Don't even need the ^O, it asks if you want to save on exit if there are modifications.