``v2rc1'' is likely to refer to the kernel supplied with the alpha software recently released to the alpha team, which, indications would have it, Mark is on.

``PrevVisual'' probably refers to a way to select the previous visual, which would be something that the 2.0b13 software doesn't provide at all.

``VisualSeek'' is probably fairly self-explanatory, but you'll have to wait and see, I imagine.