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Code 128 barcodes can be encoded with one of three character sets, known as code sets. Code set A includes uppercase letters, numbers, and symbols. Code set B includes uppercase and lowercase letters, along with ASCII characters and numbers. Code set C contains numeric characters only.

The following options are available:

• Auto: BarTender automatically chooses the most efficient code set with which to begin the barcode and then automatically switches between character sets if necessary.

• Auto A: Similar to "Auto" except that BarTender will use code set A for any sequence of characters included in both code sets A and B.

• Fixed Code Set (A, B, C): BarTender will encode the entire barcode using the selected code set.

• Manual: The user must provide all information needed, such as the initial code set and any changes in the barcode. The supported code set and function control characters are listed below.

  Code	Description
  ^A	Switch to code set A.
  ^B	Switch to code set B.
  ^C	Switch to code set C.
  ^S	Shift code set for the next character only (from A to B, or from B to A).
  ^1	Function code FNC1.
  ^2	Function code FNC2.
  ^3	Function code FNC3.
  ^4	Function code FNC4.

Supported Symbologies

This option is available for the following symbologies:

• Circular Code 128

• Code 128

• GS1-128