ESC G n
Select double-strike mode
Turns double-strike mode on or off.
• When the LSB of n is 0, the double-strike mode is off.
• When the LSB of n is 1, the double-strike mode is on.
• Only the LSB of n is effective.
• Printer output is the same in double-strike and emphasized mode
ESC - n
Turn underline mode on /off
turn underline mode on/off, n value as follows:
underline mode is turn off
underline mode ( one dot width) is turn on
underline mode ( two dot width) is turn on
This command is effective for all characters (including the blank space), but not
the blank space set by HT.
When underline mode is on, 90°clock wise rotated characters and characters
and white / black reverse characters cannot be underline.
When underline mode is off, there is no underline for following characters.
Underline width stays the same, default width: one dot width.
Character size change has no effects on underline width.
Turn underline mode on / off can be set by ESC !, the command executed at
last is effective.