Glossary
G-9
G
top of form
The point where printing can start on a label. The top of form is separated from the
edge of the label by the margin.
UPC
Universal Product Code. A numeric, 12-digit bar code symbology used extensively in
retail, particularly the grocery industry.
UDC
User Defined Character. See
graphic.
UDF
User Defined Font. See soft font.
variable data field
Bar code and text fields that change from one label to the next.
XON/XOFF
A protocol that stops the host from sending data when the printer buffer fills up and
starts it again when the buffer empties.
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