1DX Shows Grid in Manual Mode?

Why is there a semi grid displayed while in manual mode?

I can't seem to find any reference to this or a way to turn it off?

The other modes like Av, Tv or P do not show this grid.

In the menu, 4th section along from the left (set up 2 section) 5th function down is VF grid enable/ disable. Set as required.

Ah there it is, great thanks not sure why it only works in manual and not the others?

I don't know, though I hardly ever take it off manual, especially since the firmware update which allows EC in M mode, this does most everything I need

Thanks for your help

Cheers Mark

It shouldn't come on or go off depending on which exposure mode you use. Unless they are stored as custom modes, of course.