Intermec ESim v4.20 Programmer's Reference Manual page 45

Chapter 7—Commands
After retrieving and printing the form, the label may look like
this:
Combination of several options can also be used, for example:
B50,300,0,3,1,2,50,B,"Deluxe"V01C2"Combo"↵
:Writes a Code 39 bar code containing the information "Deluxe"
+ the contents of variable 01 + the contents of counter 2 + the
text "Combo" + the contents of variable 01.
Bar Code 128 family
Th e Code 128 family has three unique data character subsets: A,
B, and C. Th e choice of subset is done by use of the correspond-
ing start character A,B, or C. Th e subset can then be changed
within the bar code by control characters A, B, C or shift.
Additionally, a set of special functions are available via FNC1,
FNC2, FNC3, and FNC4. Th ese can be invoked in a fi xed string
part of the data fi eld. In the symbol's human readable part, FNC
and subset control characters are represented by a space character.
Th e data fi eld is a fi xed string and must not exceed 64 alphanu-
merical characters.
Code 128 with auto selection of subset and UCC/EAN128
Code 128 and UCC/EAN128 use automatic selection of subset,
both at the start and within the bar code.
Code 128 with manual selection of subset
By manually selecting the starting subset of the Code 128
symbol, the user has complete control of how the Code 128 is
Intermec EasyCoder ESim v4.20—Programmer's Reference Manual 39