i makes a lot of sense, just think of Kaufleute = Kauf ++ leute (merchant / trader, from kaufen = to buy) Kaufläche = Kau ++ fläche (chewing surface /

i makes a lot of sense, just think of Kaufleute = Kauf ++ leute (merchant / trader, from kaufen = to buy) Kaufläche = Kau ++ fläche (chewing surface / morsal surface from kauen = to chew) But I am sure only professional typographers + a small minority of pedants (in the good sense) would be aware of this.