| BaseBitmap | A simple bitmap class with only uncompressed data for name bitmaps | 
| Bitmap | This bitmap has compressed and uncompressed data | 
| InputData | Class for reading transactions from an ASCII file | 
| ItemsetOutput | Output itemsets to a file | 
| SubtreeEstimate | Simple class for storing subtree size estimates | 
| TailElement | Simple class for storing tail elements of each node of the tree | 
| Transaction | Transaction (itemlist) from a database | 
| TreeNode | 
1.2.18