1. A computer-implemented method for representing files, the method comprising: using a processor to receive an identification of a plurality of groups of files, the groups of files to be represented by a plurality of stack icons, which are stored in a system memory that is connected to the processor by a system bus; counting a number of files in each group of files to determine how many files are in each group, wherein the plurality of groups of files includes groups having a range of numbers of files from a largest number of files to a smallest number of files; dividing the plurality of groups of files by size into three equal fractions of groups of files, (1) wherein each one of the three fractions includes a number of groups of files that is equal to one-third of the plurality of groups of files; (2) wherein a smallest third of the plurality of groups includes groups of files that have numbers of files falling in a smallest third of the range of numbers of files; (3) wherein a medium third of the plurality of groups includes groups of files that have numbers of files falling in a medium third of the range of numbers of files; and (4) wherein a largest third of the plurality of groups includes groups of files that have numbers of files falling in a largest third of the range of numbers of files; as signing a stack icon to each of the three equal fractions, the stack icon being selected from the plurality of stack icons, (1) wherein the plurality of stack icons comprise three predefined stack icons, which include a large-stack icon, a medium-stack icon, and a small-stack icon, and (2) wherein the large-stack icon is assigned to the largest third of the plurality of groups, the medium-stack icon is assigned to the medium third of the plurality of groups, and the small-stack icon is assigned to the smallest third of the plurality of groups; and retrieving each of the large-stack icon, the medium-stack icon, and the small-stack icon from the system memory and causing each of the large-stack icon, the medium-stack icon, and the small-stack icon to be displayed on a display device as visual representations of the plurality of groups of files.