Max Graph Elements
This field sets the maximum graph elements that will be included in the graph. It is defaulted to 30, as after that the graph starts to become unreadable. There may be more subdirectories, but only this number will be shown in the graph. There may be circumstances where you may want to increase the number of elements in the Pie - especially in combination with the other pie slice opition.
Explode Largest Piece
This option allows you to explode the largest piece of the Pie chart out and away from the rest of the chart.
Include Current Directory
This option allows you to view the current directory as a part of the Pie chart. This can be helpful in showing how much space the files in the current directory take up in relation to its sub-directories.
Use 3D Graph
This option allows the user to specify whether or not they want the Graph to be shown in 2D or 3D formats. The 2D graphs are a little easier to read - but some folks like the 3D effects for presentations.
Show Legend
This option allows the user to turn the display of the graph Legend on and off. While it can be useful to have the legend, it can cause the graph to not be displayed until the program is maximized (or widened enough by dragging the edges).
Other Pie Slice Option
The other pie slice option allows the user to reduce the number of individual elements in the Pie charts by lumping slices that meet the criteria together into one slice. You can select whether you want to check the slices by '#' or by '%'. The # allows you to check the actual value of the slice and the % does the comparison with the percentage of that slice to the whole pie. The second value is the Text that will be used to label the new grouped slice. This field defaults to 'Other'. The third field is the value against which you will compare the value of Pie slice against. This option is very handy for reducing graph clutter.