Washdown or washout flushing system ?

Wracając do dyskusji o miska z lustrem, miska z półką, czy miska lejowa przedstawiam fragment z katalogu Duravitu:

A major advantage of the washdown flushing variant is the possibility of examining the stool. Also no splashing occurs when using this WCs. Disadventages: Increased scope of cleaning and more pronounced smell nuisance. Washdown flushing involves the least smell nuisance.