What is the correct way of writing CD-i?
Originally, Philips stated that CD-I is the correct way of refering to the system. However, since many people unfamiliar with the system pronounced this as CD-One, they changed it into CD-i (with the lower case ‘i’) around 1992. All other ways of writing the name (CDi, CDI, Cd-i, etc.) are wrong and should not be used.