This section deals with some key aspects of the appearance of a host application on a PC. The fonts affect both the legibility and the size of the display. There are a lot more colours on a PC than on the host and QWS3270 Secure allows you to change the colours that display on the PC to suit your perception or taste. It is also important to have the screen size work with the other open windows on your display, so this topic is described, as well.