Alley may be paved, or unpaved, and a blind alley is a cul-de-sac. Modern urban developments may also provide a service road to allow for waste collection, or rear access for fire engines and parking. Because of geography, steps (stairs) are the predominant form of alley in hilly cities and towns. This includes Quebec City in Canada and in the United States Pittsburgh (see Steps of Pittsburgh), Cincinnati (see Steps of Cincinnati), Minneapolis, Seattle, and San Francisco as well as Hong Kong, Genoa and Rome. Some alleys are roofed because they are within buildings, such as the traboules of Lyon, or
French Braille "å"), "ä/æ", and "ö/ø". Vietnamese Braille is also quite similar, though it has added tone letters, and according uses French "z" for "d", which is pronounced like "z". Catalan Braille adds for print , and Spanish Braille uses (French "ï") for the non-French consonant "ñ". Luxembourgish Braille has since switch to eight-point braille, adding a dot at point 8 for the three vowels with accents. Punctuation and formatting are in general similar as well, though changes in French punctuation over time means that some languages use older French conventions. For example, French parentheses and quotation marks originally had the opposite