You would typically see part1.rar , part2.rar , part3.rar , and finally your file, part4.rar .
Instructions on which parts of a surface should look shiny (like wet rain) or dull (like dry dirt). 4. The Digital Mystery HD-Textures.part4.rar
You would spend hours downloading parts 1 through 3, only for the internet to cut out halfway through part 4. You would typically see part1