HEI ignition module wiring

7-pin GM HEI ignition module being wired into a new Haltech Elite 1500 ECU.

I need help identifying some of the module pins and where they wire to the ECU and/or relay. For example:

What is INPUT A?

What is INPUT B (I’m not referring to bypass pinB)?

Is module pin P also referred to as ‘HOME’?

What is module pin N, and what is this typically called or referred to in ECU language?

The Elite wiring diagram shows (at plug connector pin B11) +12v switched power wired to crank (trigger) input - is this switched from a relay and what HEI/module pin is this connected to?