boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier

pkg go/ast, type CommClause struct, Colon token.Pos
pkg go/ast, type CommClause struct, Comm Stmt
pkg go/ast, type Comment struct
pkg go/ast, type Comment struct, Slash token.Pos
pkg go/ast, type Comment struct, Text string
pkg go/ast, type CommentGroup struct
pkg go/ast, type CommentGroup struct, List []*Comment
pkg go/ast, type CompositeLit struct
pkg go/ast, type CompositeLit struct, Elts []Expr

pkg go/token, const BREAK = 61
pkg go/token, const CASE = 62
pkg go/token, const CHAN = 63
pkg go/token, const CHAR = 8
pkg go/token, const COLON = 58
pkg go/token, const COMMA = 52
pkg go/token, const COMMENT = 2
pkg go/token, const CONST = 64
pkg go/token, const CONTINUE = 65
pkg go/token, const DEC = 38
pkg go/token, const DEFAULT = 66
pkg go/token, const DEFER = 67
pkg go/token, const DEFINE = 47