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^GF understands ASCII hex with ZPL compression (G–z, ,, !, :), :Z64:, :B64: and binary data; plus ~DG/^XG, ^IM, ~DY (PNG/GRF), ^ID, ~EG.
^GF
G
z
,
!
:
:Z64:
:B64:
~DG
^XG
^IM
~DY
^ID
~EG