It is keyboard input which really differentiates using qed on a QNX terminal type from qed on a non-QNX terminal. The console keyboard is rich in both function and cursor keys. Unfortunately, most terminals are rather limited in the special keys that they provide. To overcome this it is often necessary to enter a two or three character sequence to simulate a single console key. The terminal database defines keys according to their function. For example, the large + key on the console keyboard's numeric keypad is called the "select" key. It is used by qed to leave some form of input mode and return back to a command state. This key is very seldom found on a terminal, so you will have to add a kslt capability to your terminal type. Note that this should be something sent by one keystroke unless you have very fast fingers -- the timeout between characters of multi-character keycodes is quite quick.
There is no provision for executing any of the Alt letter keys such as Alt–b to turn on option blank. You will have to go to the command line and type the option command directly. (ob+ or ob-)
You may examine the escape sequences in effect for your terminal by using the infocmp utility. For more information, see the Utilities Reference.