1The .go files in this directory are split into two packages, old and new. 2They are syntactically valid Go so that gofmt can process them. 3 4``` 5If a comment begins with: Then: 6old write subsequent lines to the "old" package 7new write subsequent lines to the "new" package 8both write subsequent lines to both packages 9c expect a compatible error with the following text 10i expect an incompatible error with the following text 11 12```