write External Display Settings
save external display bit settings to printer, parameter should be null if the printer does not support the settings or it shouldn't be changed
Parameters
time of display backlight, given in seconds
intensity of display backlight: a decimal number between 0 and 100
type of screen saver: this is the total decimal number, the acceptable values depend on the type of display and the type of printer
set color of all lines except sale
set background color
set color of sale item line
set color of value line
set color of price
set color of subtotal
set color of total
save external display settings to printer, parameter should be null if the printer does not support the settings or it shouldn't be changed
Parameters
time of display backlight, given in seconds
intensity of display backlight, a decimal number between 0 and 100
type of screen saver: this is the total decimal number, the acceptable values depend on the type of display and the type of printer