| start | indicates the element within a transcription of the text
                              containing at least the start of the writing represented by this zone
                              or surface. | 
                        
                        
                           | ulx | gives the x coordinate value for the upper left corner of a
                              rectangular space. | 
                        
                        
                           | uly | gives the y coordinate value for the upper left corner of a
                              rectangular space. | 
                        
                        
                           | lrx | gives the x coordinate value for the lower right corner of a
                              rectangular space. | 
                        
                        
                           | lry | gives the y coordinate value for the lower right corner of a
                              rectangular space. | 
                        
                        
                           | points | identifies a non-rectangular area within the bounding box
                              specified by the other attributes  by specifying
                              a series of pairs of numbers, each of which gives the x,y coordinates
                              of a point on a line defining the non-rectangular area. 
                                 
                                    | 狀態 | 非必備的 |  
                                    | 資料類型 | 3–∞ 次可出現: 
                                       以空白鍵隔開 |  |