Do not fiddle with the factory name of recommendations for differences anymore. This fixes differences of regular winfo artifacts and I have not yet observed side effects, as the factories from the meta-data seem to be all correct.

SYMBOLSET
SYMBOL
  NAME 'point'
  TYPE ELLIPSE
  POINTS
    1 1
  END
  FILLED TRUE
END
SYMBOL
  NAME "square"
  TYPE VECTOR
  POINTS
    0 0
    0 1
    1 1
    1 0
    0 0
  END
  FILLED TRUE
END
END