Jain art refers to religious works of art associated with Jainism. Even though Jainism has spread only in some parts of India, it has made a significant contribution to Indian art and architecture. In general Jain art broadly follows the contemporary style of Indian Buddhist and Hindu art, though the iconography, and the functional layout of temple buildings, reflects specific Jain needs. The artists and craftsmen producing most Jain art were probably not themselves Jain, but from local workshops patronized by all religions. This may not have been the case for illustrated manuscripts, where many of the oldest Indian survivals are Jain. Jains mainly depict tirthankara or other important people in a seated or standing meditative posture, sometimes on a very large scale. Yaksa and yaksini, attendant spirits who guard the tirthankara, are usually shown with them. A tirthankara or Jina is represented either seated in lotus position (Padmasana) or standing in the meditation Khadgasana (Kayotsarga) posture. This latter, which is similar to the military standing at attention is a difficult posture to hold for a long period, and has the attraction to Jains that it reduces to the minimum the amount of the body in contact with the earth, and so posing a risk to the sentient creatures living in or on it. If seated, they are usually depicted seated with their legs crossed in front, the toes of one foot resting close upon the knee of the other, and the right hand lying over the left in the lap. Tirthanakar images do not have distinctive facial features, clothing or (mostly) hair-styles, and are differentiated on the basis of the symbol or emblem (Lanchhana) belonging to each tirthanakar except Parshvanatha. Statues of Parshvanath have a snake crown on the head. The first Tirthankara Rishabha can be identified by the locks of hair falling on his shoulders. Sometimes Suparshvanath is shown with a small snake-hood. The symbols are marked in the centre or in the corner of the pedestal of the statue.