All the TBB files are kept under $DIR_GEN_TBB (which is /ys/gen/tbb on Unix machines) and are FTP-able. There are four subdirectories. The most important to scientists is the proposal subdirectory, which in turn has several subdirectories. The current proposals are kept under current. They have file names like ar210.hudson33. This means that the proposal is the 210th one in the category of active regions and the 33rd by Hudson. Other subdirectories under proposal contain, among other things, information on completed projects, summary files and thesis topics.
In addition to the proposal subdirectory, there are three others, address, help and news. The last one has various information such as reports on meetings and campaign announcements.