What is the difference between the C128 Subset A,B and C?
The C128 barcode is capable of encoding three different character sets. For example the letter "e" is present on Subset B character set and not in the Subset A or C. The BEL character is present on Subset A character set and not in the Subset B or C. With Subset C is only possible to encode numbers that have to be in pairs but the code is smaller in a factor of 2.
What is the Auto feature?
Because of the definition of the C128 barcode, we can encode all the character sets in only one barcode using control characters. Using this feature the routines will do the job of selecting the chareter set adequate to generate the barcode.