Some user-interface uses command lines which must be remembered and entered into a empty screen. thus it consumes a lot of time although it is really powerful.
today a lot of people use GUI:
what does it stand for?
why are they know as WIMPs?
can you customize it? if yes how?
give one main problem with it...
GUI - graphical user interface
WIMPs for - window, icons, menus and pointers.
yes it can be customized by adjusting icon size and brightness of the screen and how contrasting it is.
However, a comman is sumed up with one word, thus we cannot be sure what it actually follows onto.