get_row_height
Description:
Retrieves the minimum and maximum row heights
Parameters:
| this | |
| min_height | 
           return location for the minimum row height, or   | 
      
| max_height | 
           return location for the maximum row height, or   | 
      
Retrieves the minimum and maximum row heights
| this | |
| min_height | 
           return location for the minimum row height, or   | 
      
| max_height | 
           return location for the maximum row height, or   |