1) If doing it manually via the old school way of switching the ignition "on" (and / or having the engine running for power assist) and repeatedly pumping the brake pedal to move fluid through the system, the ABS block will not be "open" so the fluid within will not be flushed --...
As this can result in an accident be sure to use the intelligent tester for air bleeding So, you're quoting the repair manual that says you need to be sure to use a scan tool (capable of commanding the brake bleed sequence) to properly bleed out the air from the system, but then ...