Set: pp::colors
  Set: pp::unicode
  Imported 'int'
  Imported 'real'
  Assumed: f
  Assumed: g
  Assumed: h
  Assumed: p
  Assumed: p2
The denotation(s) for the existing notation:
  Infix ++
have been replaced with the new denotation:
  @p2
because they conflict on how implicit arguments are used.