anchor.diff:     #:implicit-progn-mixin
      #:implicit-progn-with-declare-mixin
      #:binding-form-mixin
  +   #:bindings-of
      #:declaration-form
      #:constant-form
      #:variable-reference-form
  
positive.code:    #:go-form
     #:the-form
     #:unwind-protect-form
  
     #:walk-lambda-list
     #:walk-implict-progn
  
negative.code:    #:keyword-name
     #:name-of
     #:other-forms-of
     #:parent-of
     #:protected-form-of
     #:read-only-p
     #:result-of
     #:source-of
     #:specializer-of
     #:supplied-p-parameter
     #:tag-of
     #:target-block-of
     #:jump-target-of
     #:then-of
  