on walls, in books, and in icons, is highly distinctive, though the style and iconography are closely related to the simplified Coptic version of Late Antique and Byzantine Christian art. From the 16th century, Roman Catholic church art and European art in general began to exert some influence. However, Ethiopian art is highly conservative and retained much of its distinct character until modern times. The production of illuminated manuscripts for use continued up to the present day. Another important form of Ethiopian art, also related to Coptic styles, are crosses made from wood and metal. They are usually copper alloy or brass, plated (at least originally) with gold or silver. The heads are typically flat cast plates with elaborate and complex openwork decoration. The cross motif emerges from the decoration, with the whole design often forming a rotated square or circular shape, though the designs are highly varied and inventive. Many incorporate curved motifs rising from the base, which are called the "arms of Adam". Except in recent Western-influenced examples, they usually have no corpus, or figure of Christ, and the design often incorporates numerous smaller crosses. Engraved figurative imagery has sometimes been added. Crosses are mostly either processional crosses, with the metal head mounted on a long wooden staff, carried in religious processions and during the liturgy, or hand crosses, with a shorter metal handle in the same casting as the head. Smaller crosses worn as jewellery are also common. Ethiopia has great ethnic and linguistic diversity, and styles in secular traditional crafts vary greatly in different parts of the country. There are a range of traditions in textiles, many with woven geometric decoration, although many types are also usually plain. Ethiopian church practices make a great deal of use of colourful textiles, and the more elaborate types are widely used as church vestments and as hangings, curtains and wrappings in churches, although they have now largely been supplanted by Western fabrics. Examples of both types can be seen in the picture at the top of the article. Icons may normally be veiled with a semi-transparent or opaque cloth; very thin chiffon-type cotton cloth is a speciality of Ethiopia, though usually with no pattern. Colourful basketry with a coiled construction is common in rural Ethiopia. The products have many uses, such as storing grains, seeds and food and being used as tables and bowls. The Muslim city of Harar