Factorissimo adds factory buildings to Factorio. Place them down, walk in, build your factories inside!
Mods introducing new content into the game.
The tooltips say to use the "rotate" key for changing things like power input/output, displaying connection arrows, etc. I use Dvorak keyboard and my rotate key is bound to P, but I still have to hit R in order to make Factorissmo do what it says.
The keys might not linked together.
Check the "Mods" tab of the keybinding settings. You'll need to rebind the custom controls to what you need.
Fair enough. I guess it's more a limitation of Factorio not reading keymap settings from the system.