Returns the prior size of the text most recently created with this text style (DXF 42). This value is automatically updated after creating any text object that refers to this text style. This value is also used as a default value when the height scale factor is set to zero.

Example of Working with the Text Style Record Object 

Specific Properties of Text Styles 

OdDbTextStyleTableRecord::setPriorSize() method

OdDbTextStyleTableRecord Methods