Epson TM-T20 Technical Reference Manual page 51

Turn 90° clockwise rotation mode on/off
Select character size
Turn smoothing mode on/off
Turn upside-down print mode on/off
Turn white/black reverse print mode on/off
Select/cancel user-defined character set
Define user-defined characters
Cancel user-defined characters
Cancel print data in page mode
Commands for panel buttons
Enable/disable panel buttons
Commands for print positions
Horizontal tab
Set horizontal tab positions
Set left margin
Set print area width
Select justification
Set absolute print position
Set relative print position
Set print area in page mode
Select print direction in page mode
Set absolute vertical print position in page mode
Set relative vertical print position in page mode
Commands for bit image
Transmit the NV graphic memory capacity
Print the graphics data in the print buffer
Transmit the remaining capacity of the NV graphics memory
Transmit the remaining capacity of the downloaded NV graphics memory
Transmit the key code list for defined NV graphics
Delete all NV graphics data
Chapter 3 Application Development Information
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