Looong time away from the MD: too long.After TO I got an ATC instruction to head off elseplace and eventually "Resume own navigation" but I can

Pushing AUTO FLIGHT controls the AP channels (SYSTEMS AUTO.10.6)AP/FD heading/Track Select/Hold engaged by pulling the HDG/TRK select knob on the FCP (SYSTEMS AUTO.10.13)See also FMA Control Window Modes, the FMA is always telling you what the boxes are doing (SYSTEMS AUTO.30.28)Hope it helps.

That documentation is just too good, really.Great help - thanks.