In designing the typeface's predecessors Concorde and Roissy, Frutiger's goal had been to create a sans-serif typeface with the rationality and cleanliness of Univers but the organic and proportional aspects of Gill Sans. According to Frutiger, "What was important, was total clarity – I would even call it nudity – an absence of any kind of artistic addition." Designing Frutiger as a print version of Roissy, this principle resulted in a distinctive and legible typeface. The letter properties originally suited to the needs of Charles de Gaulle: a modern appearance and legibility at various angles, sizes, and distances. Ascenders and descenders are very prominent, and apertures are wide to easily distinguish letters from one another. Improvements on Roissy included better spacing.