| 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 | 矩形における左上点のX軸の値を示す. | 
                        
                        
                           | uly | 矩形における左上点のY軸の値を示す. | 
                        
                        
                           | lrx | 矩形における右下点のX軸の値を示す. | 
                        
                        
                           | lry | 矩形における右下点のY軸の値を示す. | 
                        
                        
                           | 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. 
                                 
                                    | 状態 | 任意 |  
                                    | データ型 | 3–∞ occurrences of 
                                       空白文字で区切られる |  |