anchor.diff:  
      #:pattern
      #:pattern-p
  +   #:all-patterns
  +
  +   #:pattern-parent
  +   #:parent-pattern ; deprecated
  +   #:parent-pbind ; deprecated
  +   #:pattern-children
  +   #:pstream-count
  +   #:pattern-metadata
  +
      #:pstream-p
      #:as-pstream
      #:pattern-as-pstream
  +
      #:t-pstream
  -   #:all-patterns
  -   #:pattern-parent
  -   #:parent-pattern
  -   #:parent-pbind
  -   #:pattern-children
  -   #:pattern-metadata
   
      #:peek
      #:peek-n
  
positive.code: 
     ;;; scales.lisp
  
     #:note-number ;; deprecated
     #:note-name ;; deprecated
  
     #:tone-matrix
  
     #:define-scale
     #:all-scales
  
negative.code:    #:pstream
     #:pstream-elt
     #:pstream-elt-future
  
     #:*post-pattern-output-processors*
     #:instrument-mapping
  