anchor.diff:     #:find-function
      #:macroexpand-1
      #:macroexpand
  +   #:fully-expand-form
      #:find-type
      #:find-ftype
      #:augment-environment
  
positive.code:    #:boundp
     #:makunbound
     #:find-value-cell
     ))
  
  (defpackage #:sicl-ast
  
negative.code: 	   #:symbol-value
  	   #:boundp
  	   #:makunbound
  	   #:constantp
  	   )
    (:export
     #:proclaim
  