| Package | Description | 
|---|---|
| org.apache.poi.hssf.model | Provides low level API structures for reading, writing, modifying XLS files. | 
| org.apache.poi.hssf.record | Record package contains class representations for XLS binary strutures. | 
| org.apache.poi.hssf.record.cf | |
| org.apache.poi.hssf.record.common | |
| org.apache.poi.hssf.usermodel | The usermodel package maps HSSF low level structures to familiar workbook/sheet model | 
| Class and Description | 
|---|
| UnicodeString Unicode String - just standard fields that are in several records. | 
| Class and Description | 
|---|
| ExtendedColor Title: CTColor (Extended Color) record part | 
| FtrHeader Title: FtrHeader (Future Record Header) common record part | 
| FutureRecord Title: Future Record, a newer (largely Excel 2007+) record
  which contains a Future Record Header ( FtrHeader) | 
| SharedFeature Common Interface for all Shared Features | 
| UnicodeString Unicode String - just standard fields that are in several records. | 
| Class and Description | 
|---|
| ExtendedColor Title: CTColor (Extended Color) record part | 
| Class and Description | 
|---|
| ExtendedColor Title: CTColor (Extended Color) record part | 
| ExtRst | 
| FeatFormulaErr2 Title: FeatFormulaErr2 (Formula Evaluation Shared Feature) common record part | 
| FeatProtection Title: FeatProtection (Protection Shared Feature) common record part | 
| FeatSmartTag Title: FeatSmartTag (Smart Tag Shared Feature) common record part | 
| FormatRun | 
| FtrHeader Title: FtrHeader (Future Record Header) common record part | 
| PhRun | 
| SharedFeature Common Interface for all Shared Features | 
| UnicodeString Unicode String - just standard fields that are in several records. | 
| Class and Description | 
|---|
| ExtendedColor Title: CTColor (Extended Color) record part | 
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