The rounded Sans with edges.
Olivia Sans got curves on the outlines and edges on the inlines. So it can be very legible and space efficient at the same time: the curves keep the distinctions between the letters, the corners keep the influences from broadnibbed pens with a subtle horizontal stress for great legibility.
Olivia has personality without being obtrusive.
Three weights (light, regular, bold) are equipped with real italics, SmallCaps, different sets of figures, accents for almost every latin script, arrows, symbols. A fourth weight (black) comes without italics or SmallCaps, but all the other features. Olivia: with or without.