anchor.diff:      | TOKEN_PRAGMA_PUSH_OPTIONS
       | TOKEN_PRAGMA_POP_OPTIONS
       | TOKEN_PRAGMALIGHT
  +    | TOKEN_POLYMONADIC_SUBCOMP
       | TOKEN_POLYMONADIC_BIND
       | TOKEN_PIPE_RIGHT
       | TOKEN_PERCENT_LBRACK
  
positive.code:     | TOKEN_ASSERT
      | TOKEN_AND
      | TOKEN_AMP
      | TOKEN_ABSTRACT
      | TOKEN_end_of_input
      | TOKEN_error
  type nonTerminalId = 
  
negative.code:     | NONTERM_effectDecl
      | NONTERM_subEffect
      | NONTERM_polymonadic_bind
      | NONTERM_polymonadic_subcomp
      | NONTERM_qualifier
      | NONTERM_maybeFocus
      | NONTERM_letqualifier
  