Known Bugs in AXIS
* jog buttons don't work if you tab to them and use the space bar
* ctrl-k doesn't work in MDI tab
* Can't choose "cm" as units (supported by at least TkEmc)
* Can't set Axis Speed

Bugs in EMC that limit functionality in AXIS
* Can't step to first line of program
* Pressing "step" (t) twice quickly may run instead of stepping
