Key points are not available for this paper at this time.
System requirements: PC Operating System: Windows 95, 98 or NT CPU type and speed: Pentium, 166MHz Memory: 32 MB Graphics: 800 x 600 x 65,536 (16 bit) CD-ROM Speed: 6X Available hard drive: 84 MB Macintosh: System 7 or later.
Searing et al. (2001) studied this question.