Glossary G
UPC
Universal Product Code. A numeric,
User-Defined Characters (UDC)
See graphic.
User-Defined Fonts (UDF)
See soft font.
variable data field
Bar code and text fields that change from one label to the next.
XON/XOFF protocol
A protocol that stops the host from sending data when the printer buffer fills up and starts it again when the buffer empties.