Eagle: How To Move a Group

I know how to move a group with the right mouse button. My question is how to move the origin of a group and its associated parts to a specific location with the command language.

I have been importing a fair number of DXF files. Aligning them with the board origin can be problematic. I know how to do it in several steps using a combination of the Information icon and grid setting. It would be nice if you could simply say: move "group" X-coordinate, Y-coordinate.

Any suggestions?

John

PS: I have thought about the "snap-to" ULP, but that leaves something to be desired.