On this page, you can see the following information:
Per-user disk usage. This tells you how much space each user is using on the NetWinder disk.
Per-user disk quota. This is the maximum amount of disk space each user is allowed to use, unless there is no quota, in which case it will read "unlimited."
Overall disk usage. This shows the amount of disk space available on each part of your disk, compared to the amount used in total. All of your user files are stored in the / area; netwinder system files are in the / partition.