While the yellow F key is pressed (or the Ctrl key on the keyboard), the “f” indicator is shown in the bottom portion of the display. When the blue G key (or Alt key) is pressed, the “g” indicator is shown.
The status of the carry bit and the overflow indicator are shown as “C” and “G”.
Control over displaying leading zeros is determined by flag 3.
The numeric display can only contain 32 bits on information while in the 64 bit binary mode. To indicate that more digits are present, the “mode indicator” changes from “b” to “.b” or “b.”. The “<” left window and “>” right window buttons are used to see the other 32 bits.