anchor.diff:        (car names)))
   
   ;; ### atoms-family
  -;; (**atoms-family** [integerp]: _form_ [[listp]: _syms_]) -> [listp]
  +;; (**atoms-family** [ll-integerp]: _form_ [[listp]: _syms_]) -> [listp]
   ;;
   ;; Returns a list of the currently defined symbols.
   ;;
  
positive.code: ;; =========
  
  ;; ### set
  ;; (**set** _sym_ _v_) -> [ll-anyp]
  ;; - _sym_ : [integerp]
  ;; - _v_ : [ll-anyp]
  ;;
  ;; TODO
  ;;
  ;; AutoLISP built-in.
  
  ;; ### boundp
  ;; (**boundp** _sym_) -> [ll-booleanp]
  ;; - _sym_ : [ll-symbolp]
  ;;
  ;; Returns `t` if _sym_ has a value bound to it, `nil` otherwise.
  ;;
  
negative.code:   ;; boundp
    ll-symbolp
    ll-symbol-value ll-symbol-name
    ;; atoms-family
    )
  