By default, panning the view in Eagle is painful on computers with touchpads, trackpads, thinkpad nubs, or whatever their called on Apple laptops.
The following command can enable the Ctrl (or Cmd on an Apple) key as an alternative way of panning the view. Just hold the key and move the mouse around (without clicking any mouse button).
This is very useful, difficult to remember, difficult to Google, and difficult to save in a "dotfile" configuration file. At least it sticks between runs of Eagle...
SET Interface.UseCtrlForPanning 1
Run it with 0
to disable this.