Each folder icon in glint represents a group of packages. Each group can contain other groups, which allows for flexible locations of packages. Groups are used to place packages that perform similar functions in similar locations. For example, Red Hat includes many application programs such as editors and spreadsheets. All of the text based ones appear in the ``Applications'' group. Inside of that group, there is another grouping for all of the editors that are shipped.
By convention, groups are written in the same way as UNIX paths. The top most group is written first, and subsequent groups follow with a slash separating the group names. This means that an X-based drawing program appears in the X11/Applications/Graphics group.
To view the packages and subgroups within a group, double click the left mouse button on a group's folder icon. The window then changes to show what that package contains. The top line of the package display shows which group you're currently looking in, as well as the groups leading to the current one. To return to the previous group you were looking at, double click on the ``Back'' folder, which is always in the upper left hand corner of the folder area (though it often gets scrolled away).
If you'd like to examine a subgroup in a new window, double click the middle mouse button on its folder. If your mouse has only two buttons, click both. This will create a new window with that group in it.