This is way too cool. This video comes from LG member Parrot, who is no longer active here. He found at his college a 4-foot troffer which houses what appears to be an F30T8 lamp, on a magnetic preheat ballast. However, it's manual preheat, and the preheat switch is actually built into the light switch! You flip the switch like any light switch, then push it up a bit more, and it preheats, then let go and it starts. I've never seen anything like it; it's so cool! The switch is made by GE.
https://www.youtube.com/watch?v=FlNvkvRJ9kI