RoboFog reads and writes Fontographer 3.5 source files as well as the other formats that 3.5 used to do. The python side of RoboFog can read, write and modify files, as part of scripts. New features Characters in the Metrics window are now drawn by ATM . This is a major improvement on the Nimbus rasterizer.
Curves are smoother and closer to rasterised reality.
This means that RoboFog users have to install ATM, but that should not be much of a problem. Menu for Python scripts. Subfolders in the Scripts folder become sub-menu's. Writing scripts means adding directly to the functionality of RoboFog. One font can be set to be a live interpolation between two extremes.