| Package | Description | 
|---|---|
| org.apache.poi.ss.formula.ptg | The formula package contains binary PTG structures used in Formulas | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | Pxg3DAn XSSF only special kind of Ptg, which stores a range of 
  sheet / book references in string form. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | Area3DPxgXSSF Area 3D Reference (Sheet + Area) | 
| class  | Deleted3DPxgAn XSSF only representation of a reference to a deleted area | 
| class  | NameXPxgA Name, be that a Named Range or a Function / User Defined
  Function, addressed in the HSSF External Sheet style. | 
| class  | Ref3DPxgXSSF 3D Reference | 
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