anchor.diff:    (dump-passes?               nil)
   
     ; Dump outputs of passes in which this expression is found.
  -  ; '(FUNCTION BUTLAST) would dump everything related to compiling BUTLAST.
  +  ; '(FUNCTION BUTLAST) would dump every pass result containing
  +  ; symbol BUTLAST.
     (dump-selector              nil)
   
     ; Dump FUNINFOs in comments before their functions.
     (funinfo-comments?          nil)
   
     ; Used for incremental compilations.  If set only this list of sections
  -  ; is compiled and the rest is taken from the section caches.
  +  ; is compiled and the rest is taken from the cache.
     (sections-to-update         nil)
   
     ; Associative list of target-dependent configurations.
  
positive.code:   (accumulated-toplevel-expressions nil)
    (predefined-symbols       nil)
  
    ; Literals that must be declared or cached before code containing them is emitted.
    (compiled-chars           (make-hash-table :test #'==))
    (compiled-numbers         (make-hash-table :test #'==))
    (compiled-strings         (make-hash-table :test #'eq))
    (compiled-symbols         (make-hash-table :test #'eq))
  
    (compiled-decls           nil)
    (compiled-inits           nil)
  
negative.code:         :accumulated-toplevel-expressions (copy-list accumulated-toplevel-expressions)
          :predefined-symbols       (copy-list predefined-symbols)
  
          :compiled-symbols         (copy-hash-table compiled-symbols)
  ;        :compiled-chars           (copy-hash-table compiled-chars)
  ;        :compiled-numbers         (copy-hash-table compiled-numbers)
  ;        :compiled-strings         (copy-hash-table compiled-strings)
          :compiled-decls           (copy-list compiled-decls)
          :compiled-inits           (copy-list compiled-inits)
          :identifiers              (copy-hash-table identifiers)
  