Each character in a Code 93i symbol is made up of three bars and three spaces, each of which can be single, double, triple, or quadruple thickness. These six elements are spread out over a space of nine modules.
                A Code 93i symbol can be structured either with two check digits or with error correction. 
                Symbology Structure with Check Digits
                
                
                Symbology Structure using Error Correction
                
                
                    - 
                        
Leading quiet zone
                     
                    - 
                        
93i start character
                     
                    - 
                        
Three error correction characters
                     
                    - 
                        
One or more characters representing the first part of the data and special characters
                     
                    - 
                        
A special features flag character followed by a symbol length indicator character
                     
                    - 
                        
Zero, one, or more characters representing the rest of the data and special characters
                     
                    - 
                        
Three error correction characters
                     
                    - 
                        
Code 93 stop character
                     
                    - 
                        
Trailing quiet zone