The links in the frames aren't the only navigational tools provided in the ETMs. You can also use the keyword search feature and the other navigational buttons near the bottom of the interface. Click here to see a code for these buttons.
Of special interest are the buttons with binoculars icons. They allow you to zoom in or out on illustrations of E-6B aircraft subsystems.
The button at the far left with the lettering TPDR allows you to send a Technical Publication Deficiency Report (TPDR) anytime you find a problem in need of correction in the manual.