An ergonomically correct monitor position leads to reduced discomfort and complaints to the neck (Kumar 1994 McKinnon 1994, Marcus2002). The optimum position increases productivity by 10% (Sommerich et al, 1998). A relatively large viewing distance is less straining to the eyes, an arms length is recommended. A condition of this is that the characters on screen must be large enough to read easily (Owens and Wolf Kelly 1987). Larger characters can be read quicker than small ones (Tullis et al, 1995), small characters therefore decrease productivity (Jaschinski-Kruza, 1988).