[XeTeX] Character Variants

[Bob Beckett]

Can anyone help me get XeTeX to create a character variant?

I am using Kozuka Mincho Pr6N, which includes a variant of U+8FBB. This 
variant is obtained by combining 8FBB with the Ideographic Variation Sequence 
E0100. (I hope I'm phrasing this correctly.)

If I use the editor BabelPad, I can get the variant by typing:

	8FBB(Alt-x)E0100(Alt-x)

But I don't know how to accomplish this in XeTeX. The fontspec manual says 
that it supports character variants, but gives no examples. Not being a 
computer person, I need a real example.

Thanks