Datalogic Gryphon I GD4100 Reference Manual page 239

Code 128
Code 128 Set Length 1 — cont.
ENTER/EXIT PROGRAMMING MODE
Select Code 128 Set Length 1 Setting
Make a mistake? Scan the CANCEL barcode to
abort and not save the entry string. You can then
start again at the beginning.
CANCEL
01 = Length 1 is 1 Character
DEFAULT
Product Reference Guide 237