Keyboard Shortcuts

Is there a keyboard shortcut for Z axis move up / down? and if no, can this be a feature request? it will greatly help my workflow…

And while we are at it… is it possible to make a button in the software (ans also a shortkey) for setting the origin of the laser (ruida)

My laser and computer are a few meters apart and sometimes i keep walking back and forth between the two. so these functions will help me big time!