Images of the D800 Viewfinder Masking

I have done a search but cannot find any result.

Can some body either point me in the right direction as to where to find actual images of the viewfinder "Mask" arrangement for DX and other crop modes, or lines, grids, etc that actually show up in the viewfinder of the D800.

or,

Can somebody PLEASE post some images of this.

Thanks,

Bryan (BPB)