I changed the grid spacing to 0.1 so that I could scale down my font a bit. This is really very helpful. Is there a possibility to change the arrow-steps? My problem now is, that when I move a node they seem to use still the grid and I would need smaller steps.
Why would you like to scale down your font?
The grid size is supposed to be integer (the interface did not reflect that properly). So a value between 0 and 1 is not possible.
Because I realized that the sum of ascender and descender is more than 1000 units. And sometimes it could be helpful when moving a node by arrow key to have smaller steps.
You could just increase the UPM size. But 1000 units are almost always enough to draw letters in.