Rule of thirds intersection of two of the lines, close enough to take advantage of the rule. The rule of thirds is applied by aligning a subject with the guide lines and their intersection points, placing the horizon on the top or bottom line, or allowing linear features in the image to flow from section to section. The main reason for observing the rule of thirds is to discourage placement of the subject at the center, or prevent a horizon from appearing to divide the picture in half. Michael Ryan and Melissa Lenos, authors of the book "An Introduction to Film Analysis: Technique
Quarters of Rome 1926. These two were later officially renamed, the XVII becoming "Trieste" in 1946 and the XVI becoming "Monte Sacro" in 1951. Other quarters have been renamed: the quarter XV, previously called Milvio, became "Della Vittoria" in 1935, while the III, once known as Vittorio Emanuele III in honor of the King of Italy, was renamed "Pinciano" in 1946. In 1961, 18 more quarters were established and numbered XVIII to XXXV. Some of the new quarters were created dismembering five eastern suburbs of the city, some others were established in the rural area around the city, the so called Agro Romano