I'm not an S92 pilot but pending a real live one appearing, I can fill in some of the blanks:
ALTP - Altitude Preset. You dial up the altitude, engage the mode and the helicopter arrives at that altitude
Min - GUESSING the setting of the bug which, when you descend below it, brings on the EGPWS callout "minimums"
RA - GUESSING Radalt ie radio altimeter.
LTNG - don't know, sorry, except that I think it is the selected Nav source for the screen
At the top is the row of engaged modes on the autoplot, the white P R and C are pitch (ie fore/aft cyclic), roll/yaw and collective axes.
The writing in green is the engaged modes on these axes so IAS is airspeed, PLOC is pseudo localiser (ie a localiser like Nav function produced by the FMS). ALT is altitude hold. PG/S is pseudo glideslope, again generated by the FMS. It is white and on the lower row because it is armed, not engaged. When the heli flies into the glideslope, the ALT will disappear and the PG/S will move up and go green.
Do I get my S92 type rating now please?