These basilicas were rectangular, typically with central nave and aisles, usually with a slightly raised platform and an apse at each of the two ends, adorned with a statue perhaps of the emperor, while the entrances were from the long sides. The Roman "basilica" was a large public building where business or legal matters could be transacted. Although their form was variable, basilicas often contained interior colonnades that divided the space, giving aisles or arcaded spaces on one or both sides, with an apse at one end (or less often at each end), where the magistrates sat, often on a slightly raised dais. The central aisle the nave tended to be wider and taller than the flanking aisles, so that light could penetrate through the clerestory windows.