I got a sandwich maker (croque monsiour) for Christmas, and I'm trying to use it for the first time. The enclosed manual really is a brilliant example of why manual's typically are useless:

Dutch side:
"Steek de stekker in het stopcontact : het rode controlelampje gaat branden. Wacht tot het groene controle lampje uitgaat (ca. 4-5 minuten) : het apparaat heeft dan de juiste baktemperatuur bereikt."
In English: Plug the sandwich maker in : the red light comes on. Wait until the green light turns off (approx. 4-5 minutes). The machine has now reached the correct temperature.

French side:
"Brancher le cordon de l'appareil sur le secreut : le voyant rouge s'allume. Dès que le voyant vert s'allume, le temps de préchauffage est terminé (environ 5 à 6 minutes)"
In English: Plug the sandwich maker in : the red light comes on. When the green light turns on, the preheating time has ended (approx. 5-6 minutes).

So, I leave as a riddle for the reader: just how long am I supposed to wait for the green light to do what?