With the Enhanced Graphic Module installed, an additional set of features were available. Primary among these was the addition of "12-bit addressing" which increased the resolution to 4096 by 4096, again with the upper section of the Y axis above 3120 being unseen. Any address could be sent in 12-bit mode simply by sending in an "extra byte" between the high and low Y characters, using the same character range as the low-order Y addresses. On a 4010 series terminal or 4014 without the Enhanced Graphic Module, this extra byte would then immediately be overwritten by the actual low-order address that arrived as the next character, and thus have no effect. With the Enhanced Graphic Module, the terminal would use bits 1 and 2 to add to the front of the normally 5-bit high-order X address, and bits 3 and 4 to add to the high-order Y address.