"Page Setting" used to set the display screen. You can set The screen is as follows.
"Page size" set screen display and paper size for printing.
"Auto" sets the general display screen.
"A4" sets the screen to A4 paper.
"Label Printer" Set the screen to Label Printer paper.
"Custom" sets the screen according to your needs.
"Width" is the screen width in "px".
"Height" is the screen height in "px".