I'm gonna take a guess..but I don't know..

I'd guess that maybe "E" is the sensor direction for the other pilot or CP/G and "F" looks sort of like a symbol you'd get when your Hellfire is out of gimbal constraints (dashed line)..?

Do I get any points or do I go back to school?

Ah crap, when you mentioned "E" I was thinking "I should have remembered that" because they talked about that in Ed Macy's book. "F" makes a lot of sense.

Thanks!

Well..I don't know if that is right or not..but I just read Macy's book about 2 months ago..so maybe that triggered something in my head or something.

yeah! this picture is the reality FILR video,it would be exciting if the E(machinegun line) and I(gun position) could be added to game too !

Almost

F is, as you note, the Hellfire constraints, like on the HUD.

E is the cued LOS reticle. It can show the direction of the other pilot's helmet, but it can also show the direction of other sensors, like the TADS (more interesting when shown on the HUD), radar target, RFI contact, missile seeker, waypoint/target point etc.

E and I is not for the gun. E is as I explain the cued LOS reticle, and I shows the position of the same relative to the field of view.

Great man! Im waiting your 1.14 patch! I think that would exceed DCS !

Thanks for the quick education Arneh! I knew you would know!

Note that the pic I posted is for an AH-64A. Although it's mostly the same as the AH-64D, there are a few differences. Sorry about not posting a key to the picture. I'll do that as soon as I can, should clear a few things up.

I take it that that pic came out of the AH-64A manual? If that's the case then arneh can look up what the symbols mean as he has a copy of it.

I had a quick look and it is in fact from the AH-64A Technical Manual. For those of you that don't have it, or for arneh's quick reference, here it is with the descriptions (I took screenshots and then stitched them all together)...
http://digitality.emenace.com/temp/tads-symbology.jpg