Import package between Eagle libraries

Hi I need to make a variant for a device, and the package is available in another library. Can I move a package between libraries? It would be easier than redrawing something that is already done.

Specifically, I need a vertical TO-220 package available for the Linear regulator LM78xx series. There are no vertical variants in the linear library.

Is there another way to do this?

Thanks!

1) open the library you want to add a package to
2) find the package you want to copy in the eagle 'control panel'
3) drag and drop the package into the library editor
4) add new package to parts and connect the pins

aaah! thank you very much. That is much easier than one way I managed.
I basically did the same, but by opening, selecting as a group, copy, open lib to add to, then paste, then add package, connect, update.

Much faster your way.

Awesome. Thank you!