anchor.diff:  (defparameter *no-specials* nil)          ; Suppress ass. of special routines
   (defparameter *avail-descs* 0)            ; max descriptors available
   (defparameter *tics* 0)                   ; for extern checkpointing
  -(defparameter *scheck* nil)                 ; for syntax checking mode
   (defparameter *log-cmds* nil)             ; log cmds
   (defparameter *shutdown-count* -1)        ; shutdown countdown
   (defparameter *shutdown-idnum* -1)        ; idnum of person calling shutdown
  
positive.code:     (setf *no-rent-check* t)
      (slog "Running in minimized mode & with no rent check and olc lock."))
    (when check-only
      (setf *scheck* t)
      (slog "Syntax check mode enabled."))
    (when no-rent
      (setf *no-rent-check* t)
  
negative.code:     (verify-environment)
  
      (cond
        (check-only
         (boot-world)
         (slog "Done.")
         (return-from main 0))
  