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