| Package | Description | 
|---|---|
| org.apache.poi.hssf.eventusermodel | HSSF eventmodel Package provides an event-based API for reading HSSF files. | 
| org.apache.poi.hssf.model | Provides low level API structures for reading, writing, modifying XLS files. | 
| org.apache.poi.hssf.record.aggregates | The record aggregates are not real "records" but collections of records that act as a single record. | 
| org.apache.poi.hssf.usermodel | The usermodel package maps HSSF low level structures to familiar workbook/sheet model | 
| Class and Description | 
|---|
| InternalWorkbook Low level model implementation of a Workbook. | 
| Class and Description | 
|---|
| DrawingManager2 Provides utilities to manage drawing groups. | 
| InternalSheet Low level model implementation of a Sheet (one workbook contains many sheets)
 This file contains the low level binary records starting at the sheets BOF and
 ending with the sheets EOF. | 
| InternalWorkbook Low level model implementation of a Workbook. | 
| RecordStream Simplifies iteration over a sequence of Record objects. | 
| WorkbookRecordList | 
| Class and Description | 
|---|
| RecordStream Simplifies iteration over a sequence of Record objects. | 
| Class and Description | 
|---|
| InternalSheet Low level model implementation of a Sheet (one workbook contains many sheets)
 This file contains the low level binary records starting at the sheets BOF and
 ending with the sheets EOF. | 
| InternalWorkbook Low level model implementation of a Workbook. | 
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